General knowledge study guide（1）

基础知识指南
1. Which of these is a good thing to remember about drinking alcohol
( ) The driver can control how fast the body gets rid of alcohol
( ) Small quantities of alcohol improve reaction time
(x) Alcohol first affects judgment and self-control
1.下列哪个是酒精会给你带来的第一反应：
（3）酒精首先会影响你的判断力和自我控制能力。

2. Which of these is not a good rule to follow when caring for an injured person at a collision?
( ) If a qualified person in helping them, stay out of the way unless asked to assist
( ) Move severely injured persons if a danger exists
(x) Keep injured persons cool
2.下列哪个是发生碰撞后有人受伤的错误做法
（3）让受伤人员失温

3. Which of these statements is true about medicines used to treat the common cold?
( )It can be used while driving if you only take half the regular dosage
( )It should only be used when driving in daytime
(x)It often makes you sleepy and thus should not be used while driving
3. 下列哪个是感冒药会给你带来不良反应
（3）它常常使你昏昏欲睡，不能在驾驶时使用它

4. The total weight of a powered unit, the trailer, and the cargo is called
( ) Gross vehicle weight
(x)Gross combination weight
( ) Gross axle weight
4.拖车与货物和一套动力系统的总重量叫什么？
（2）组合总重量

5. Which piece of emergency equipment should be in your vehicle?

( ) Circuit breakers
( ) First aid kit
(x)Warning devices for parked vehicles
5.下列哪个是车上应有的应急设备？
（3）紧急停车时所使用的警告牌

6. Which of these statements is true about causes of vehicle fires?

( ) Under-inflated tires will NOT cause a vehicle fire
( ) Carrying a properly charged fire extinguisher will help prevent fires
(x)Poor trailer ventilation can cause flammable cargo to catch on fire
6. 下列哪个是导致车辆起火的真正原因
（3）透气性较差的拖车可能会造成易燃货品起火

7. Brake ”fade” can be:

(x)Caused by the brakes getting very hot
( ) Corrected by letting up on the brakes for 1-2 seconds and then reapplying them
( ) Caused by very cold weather
7.刹车“失效”是因为什么？
（1）因为刹车过热导致的

8. Which of these statements is true about vehicle fires?

( ) It the cargo or box trailer catches on fire, open the doors as soon as you can
( ) If your engine is on fire, open the hood as soon as you can
(x)A burning tire should be cooled with water
8. 下列哪个是对待车辆起火的正确方法
（3）当轮胎起火时可以用水降温

9. Which of these statements is true about brakes?

(x)Brakes absorb more heat to stop heavier vehicles
( ) Brake drums cool very quickly when the vehicle is moving very fast
( ) Brake fade is not caused by heat
9.下列哪个是关于刹车的正确陈述
（1）为了停住重车，制动系统会更热。

10. Which of the following does not provide extra gears on some trucks
( ) Automatic transmissions
( ) Auxiliary transmissions
(x)Multi-speed rear axles
10.下列哪个部件是某些卡车上没有的
（3）多速后轴

11. You are starting your vehicle in motion from a stop. As you apply power to the drive wheels, they start to
spin. You should
(x)Take your foot off the accelerator
( ) Take your foot off the accelerator and apply the brakes
( ) Try a lower gear
11.当车辆停下再起步时，脚从刹车上拿开，为了使轮子开始转动，你应该：
（1）用脚踩油门

12. You wish to turn right from a two-lane, two-way street into another. Your vehicle is so long that you vehicle
is so long that you must swing wide to complete the turn. Which of these figures shows how you should make
the turn?
( ) Figure A
(x)Figure B
( ) Figure C
12.当你驾驶着很长的车辆，下列图中哪个是正确的在狭窄道路上右转的方法：
（2）图 B

13. Which of these statements is true about downshifting?

(x)Downshift before you enter the curve
( ) Let the rpm’s decrease while the clutch is released and the shift lever is in neutral
( ) Downshift just after you enter the curve
13.下列哪个做法是正确的，关于降档？
（1）在进入弯道之前降档
14. Which of these is NOT a danger when an automatic transmission is forced into a lower gear at high speed?
( ) Damage to the transmission
( ) Loss of engine braking effect
(x)Loss of steering control
14.当驾驶自动档的车时，在高速下强行切入低档位会导致的下列哪种情况不危险？
（3）导致失去操控力

15. Which of these statements is true about backing a heavy vehicle?

(x)You should avoid backing whenever you can
( ) Helpers should be out of sight and use only voice(spoken)signals to communicate with the driver
( )It’s safer to back toward the right side of the vehicle
15.下列哪个是重型车辆倒车正确的做法
（1）在可能的情况下，尽量避免倒车

16. The distance that you should look ahead of your vehicle while driving is about ___ mile at highway speeds
( ) 1/8
(x) 1/4
( ) 1/2
16.在高速上行驶时，你应该保持与你前车的安全距离为______
（2）1/4 英里

17. The distance that you should look ahead of your vehicle while driving is ____ at low speeds
( ) 1/2block
(x) 1 block
( ) 2 blocks
17.当你的车辆正在以低速行驶中，视线范围应该和前方的车辆保持______的安全距离？
（2）一个街道

18. The Commercial Driver Handbook suggests several things to do when you pass a vehicle .Which of these is
NOT one of them?
( ) Lightly tap your horn, if needed
(x)At night, turn on your high beams while you pass the vehicle
( ) Assume the other driver does not see you
18. 当你超车时，下列哪个不是，商业驾驶手册上建议的方式
（2）开着远光灯在夜间超车

19. Use your vehicle’s horn when

( ) A car is in your way
(x) It may help avoid a crash
( ) You want to change lanes
19.使用喇叭是因为
（2）它可以避免碰撞事故

20. Which of these statements is true about speed management?

( ) Shady parts of the road allow better traction than open areas
( ) Road surfaces will freeze before bridges
(x) On slippery roads, it takes longer to stop and is harder to turn without skidding
20.关于速度管理，下列哪个是正确的说法
（3）在湿滑的路面上，过快的速度会需要更长的距离才能制动，在没有刹车的情况下更难转弯

21. You are driving a 40-foot vehicle at 35 m.p.h. The road is dry and visibility is good. What is the least amount
of seconds in space that you should keep in front of your vehicle to be safe?
( ) 3 seconds
(x) 4 seconds
( ) 5 seconds
21.当你正在行驶一辆长 40 英尺的车辆，车速为 35 迈每小时，能见度良好，你应该与前车保持多少秒的安全距离？
（2）4 秒

22. Which of these is a good thing to do when driving at night

(x)Drive slowly enough to stop within the range of your headlights
( ) Look directly at oncoming headlights only briefly
( ) Keep your instrument lights bright
22. 下列哪个是在夜间开车是正确做法
（1）慢速行驶，控制好在灯光范围内的安全距离

23. Which of these is NOT something you should do if your headlights are not working properly?
(x)Leave your high beams on
( ) Clean the headlights
( ) Adjust the headlights
23. 如果你的车灯不能正常工作，你应该
（1）开启你的远光灯

24. You should avoid driving through deep puddles or flowing water. But, if you cannot, which of these steps
can help keep your brakes working?
( ) Pressing both the brake pedal and accelerator firmly after coming out of the water
(x)Gently putting on the brakes while driving through the water
( ) Turning on your brake heaters
24.你应该避免车辆驶入深水坑和流动的水中，但如果无法避免，下列哪个动作可以帮助你保持刹车的有效工作
（2）轻轻的踩刹车，驾驶车辆通过水域

25. Which of these is true about the radiator shutters and the winter front?
( ) The winter front should be closed tightly
(x)You should remove ice from the radiator shutters
( ) The engine may overheat if the winter front is left open
25.下列哪个是冬季时应该对散热器百叶窗和前挡风罩做的
（2）去除散热器上百叶窗上的冰

26. Which of these statements is NOT true about engine belts in hot weather?
(x)Cracking is likely to occur but is not a safety threat
( ) You can cheek the tightness of the belts by pressing on them
( ) Loose belts will not turn the water pump and/or fan on properly
26.下列哪个是对引擎传送带过热错误的判断
（1）传送带可能会断裂，但是不影响车辆安全性

27. What should you do when you see a hazard in the roadway?
( ) Swerve around it and get back in your lane
( ) Stop quickly and pull to the side of the road
(x)Use your 4-way flashers or brake lights to warn others
27.当你在路上看到有危险时，你应该怎么做
（3）开启你的 4 向应急闪灯或者刹车灯，以给他人警告

28. Truck escape ramps:

(x) Help avoid damage to vehicles
( ) Cannot be used by certain types of heavy vehicles
( ) Are not for buses
28.卡车的逃生通道可以：
（1）帮助避免车辆发生危险

29. Which of these statements is a good rule to remember when your vehicle is in a traffic emergency and may
collide with another vehicle
(x)You can almost always turn to miss an obstacle more quickly than you can stop
( ) Stopping is always the safest action in a traffic emergency
( ) Leaving the road is always more risky in a traffic emergency
29.当你发现前方发生紧急交通状况或可能与另一辆车碰撞时：
（1）基本上，绕过障碍物快于停住车

30. Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it
goes to the floor. Which of these statements is true?
( ) The parking brake will not work because it is part of the same hydraulic system
(x)Pumping the brake will generate enough pressure to stop the vehicle
( ) Shifting into neutral will help slow the vehicle
30..在平路上行驶时，你踩下液压制动系统，发现直接到底了，以下表述哪一项是正确的？
（2）液压制动系统能够产生足够的压力，使车辆停下

31. Hydroplaning
(x)Occurs when these is a lot of water
( ) Cannot occur when driving through a puddle
( ) Is more likely if tire pressure is low
31.什么情况会发生湿路滑胎
（1）发生在很多水的时候

32. Most serious skids result from:

( ) Turning too sharply
( ) Having an uneven load
(x)Driving too fast for conditions
32.导致严重打滑时因为：
（3）车辆行驶速度过快

33. Which of these statements is true about cargo loading?

( ) The legal maximum weight allowed by a state considered safe for all driving conditions
(x)State laws dictate legal weight limits
( ) If cargo is loading by the shipper, the driver is not responsible for overloading
33.下列哪个对于装载货物的说法是正确的
（2）国家法律规定的法律重量限制

34. Which of these statements is true about tires?

(x)You should inspect your tires every two hours or every 100 miles when driving in very hot weather
( ) The air pressure of a tire decreases as the temperature of the tire increases
( ) If the tires are too hot to touch, release 5-10 pounds of air pressure to cool them down
34.下列关于轮胎哪个说法是证据的
（1）在天气炎热的时候，你应该每 100 英里或者每 2 小时就检查一次轮胎状况

35. You are checking your steering and exhaust systems in a pre-trip inspection. Which of these problems
should be fixed before the vehicle is driven?
( ) Oil on the tie rod
( ) Grey smoke from the exhaust pipe
(x)Steering wheel play-more than 10%(2 inches on a 20-inch wheel)
35.车辆行驶前，应该固定每次检查方向盘和排气系统，哪些问题必须在开车前修复：
（3）方向盘间隙超过 10%（2 英寸 20 英寸的轮毂）

36. Which of these statements is true about shipping hazardous materials?

( ) A four-inch, circular, red hazardous material label must be on the container
( ) Gas cylinders that will not hold a label must be shipped under container
(x)A four-inch, diamond-shaped, hazardous materials label must be on the container
36.下列哪个是运输危险品时必须标明的
（3）四英寸，菱形，必须在容器上标上有害物质标志

37. One can recognize hazardous materials by looking at the container’s

(x)Label
( ) Shape
( ) Color
37.通过什么可以识别容器内是有害物质
（1）标签

38. You must stop on a hill or curve on a two-lane, two-way road. How far back should you place your reflective
triangles?
( ) Within 250 feet behind the vehicle
(x)Within 500 feet behind the vehicle
( ) As far back as necessary, so others can see your vehicle
38.如果你必须将车停在双车道上，或者双向道的转弯处，你应该把反光的警告牌放在离车多远的后方
（2）放在车辆后面 500 英尺

39. You are driving a new truck with a manual transmission. What gear will you probably have to use to take a
long, steep downhill grade?
( ) The same gear than you would use to climb the hill
(x)A lower gear than you would use to climb the hill
( ) A higher gear than you would use to climb the hill
39.你驾驶着一个新的手动挡卡车，在一个较长的下坡路时，你会选用以下哪种方式
（2）使用一个低于爬坡的档位来进行下坡

40. To help you stay alert while driving, you should:

(x)Take short breaks before you are drowsy
( ) Schedule trips for hours that you are normally asleep
( ) Keep the cab warm and quiet
40.在驾驶时，为了帮助你保持警觉，你应该：
（1）在你昏昏欲睡前，采取短暂的休息

41. Which of these is true about hours of service?

( ) You must take a break after every 2hours of driving
( ) After 1,000 hours you will be exempt from certain regulations
(x)You should balance your hours of service with enough sleep to keep you alert
41.下列哪个是正确的作息时间
（3）提醒自己应该保持平衡，保证充足的睡眠时间

42. Which of the following is true about preventing fatigue on a long trip?
(x)Stop periodically for rest and exercise
( ) Keep the vehicle closed and heated
( ) Take an over-the counter stimulant
42.下列哪个方法可以防止长途旅行的疲劳
（1）定期停车休息和运动

43. You will be place out-of service for 24 hours if you Blood Alcohol concentration (BAC) is :
( ) At least 0.2%
( ) At least 0.4%
(x) Any detectable amount below 0.4%
43. 在开车前 24 小时内，必须保持你的血液酒精含量低于多少（BAC）以下：
（3）任何时间检测都应低于 0.4%

44. On which fires can you use water?

(x) Tire
( ) Gasoline
( ) Electrical
44. 哪里着火可以用水？
（1）轮胎

45. Which of these statements is true about warning other drivers of a stopped vehicle?
(x) Move the rear reflective triangle back if the driver’s vision is obscured within 500 feet
( ) Keep the vehicle’s taillight on to warm other drivers
( ) Put out your emergency warning devices within 5 minutes
45.下列哪个是正确警告其他司机停车的
（1）如果驾驶员的视野在 500 英尺内被遮挡，则将后反射三角形向后移动。

46. Which of these statements is true about engine over heating?

( ) Never shut off an overheated engine unit it cools
(x) Never remove the radiator cap on a pressurized system until the system has cooled
( ) Antifreeze is not needed when the weather is warm
46.下列哪个是关于发动机过热？
（2）切勿卸下增压系统的散热器盖，直到它变冷
47. For your safety, when you place your reflective triangles you should:
( ) Carry the triangles at your side
(x) Hold the triangles with reflective side toward the oncoming traffic
( ) Keep them out of sight while you to the locations where you will place them
47. 为了您的安全，你应该怎样放置三角形反光镜
（2）拿住三角板的反光面，对着迎面而来的车辆

48. Retarders:
( ) Allow you to disconnect the steering axle brakes
(x) Can cause the drive wheels to skid when they have poor traction
( ) Can not be used on interstate highways
48. 减速器
（2）当情况恶劣牵引时可能会导致驱动车轮打滑

49. Which of the following is not a type of retarder?

( ) Electric
( ) Hydraulic
(x) Robotic
49. 下列哪个不是一个减速类型：
（3）机械

50. What is the proper way to hold a steering wheel?

( ) Both hands close tighter, near the top of the wheel
( ) Both hands close tighter, near the bottom of the wheel
(x) Both hands, on opposite sides of the wheel
50. 手握方向盘的正确方式？
（3）双手握在方向盘的两侧

51. You are driving a long vehicle that makes wide turns. You want to make a left turn from Elm Street onto Oak
Street. There are two left turn lanes ( marked ”A” and “B” ) on Elm Street, and Oak Street is four lane
streets with two lanes in each direction. You should:
( ) Use left turn lane “A”
(x) Use left turn lane “B”
( ) Start in left turn lane “A” and swing into left turn lane “B” just before entering the intersection
51. 你正在集装箱卡车。你想从 Elm Street 左转到 Oak Street。有两个左转车道（标有“A”和“B”）Elm Street 和
Oak Street 是在每个方向两个车道四车道街道。你应该：
（2）应该使用左车道“B”

52. Which of these statements is true about double-clutching and shifting?

( ) Double-clutching should only be used with a heavy load
( ) Double-clutching should not be used when the road is slippery
(x) You can use the tachometer to tell you when to shift
52.下列哪个是正确关于双离合和换挡的
（3）您可以使用转速表告诉你什么时候换挡

53. If you have a heavy load that is slowing you down on an upgrade, you should:
(x) Shift into a lower gear
( ) Exit the road until traffic is lighter
( ) Drive on the shoulder so others can pass easily
53. 如果重载上坡导致速度变慢，你应该
（1）转移到一个较低的档位

54. Which of these statements is NOT true about backing a heavy vehicle?
( ) You should back and turn toward the driver’s side whenever possible
( ) You should use a helper and communicate with hand signals
(x) You should back slowly until you slightly bump into the dock
54.下列哪个关于重型车辆倒车是错误的？
（3）你应该慢慢向后，直到你稍微撞到拦阻块

55. How far should a driver look ahead of the vehicle while driving?
( ) 1-2seconds
( ) 5-8seconds
(x) 12-15seconds
55. 驾驶车辆时，视线应当覆盖车辆前进方向上多长时间的行驶距离？？
（3）12-15 秒

56. In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don’t
see the car. To change lanes, you should:
(x) Wait until you are sure the car isn’t in your blind spot
( ) Ease into the other lane slowly so the car can get out of the way
( ) Assume the car left the road and change lanes as normal
56. 看你的镜子，你会看到从后面驶来的一辆车。下一次你检查你的镜子的时候你看不到车。要变更车道，你应该：
（1）等待，直到你确定没有汽车在后部盲区

57. According to the Commercial Driver Handbook, why should you limit the use of your born?
(x) If can startle other driver
( ) It reduces air pressure needed to stop vehicles with air brakes
( ) You should keep both hands on the steering wheel at all times
57. 根据商业司机手册，你为什么要限制使用你的喇叭：
（1）可能会惊吓到别的司机

58. You are driving a heavy vehicle at 35 mph. The speed limit is 55 mph. The safest speed for you vehicle is:
( ) 25 mph
(x) 35 mph
( ) 45 mph
58. 你所驾驶的重型车辆在 35 英里。限速是 55 英里每小时。为您最安全的车辆速度为：
（2）35 mph

59. Whenever you double your speed, it will take about _____ times as distance to stop.
( ) Two
( ) Three
(x) Four
59. 当你的速度加倍，停车距离会变成大约_____倍
（3）4
60. You are driving a vehicle at 55 mph on dry pavement. About how much total stopping distance will you
need to bring it to a stop?
( ) Twice the length of the vehicle
( ) Half the length of a football field
(x) The length of a football field
60. 你所驾驶的车辆在干燥路面上的 55 英里。你需要把它停止多少总煞车距离？
（3）一个足球场的长度

61. Which of these statements is true about overhead clearance?

( ) You should assume posted clearance signs are correct
(x) The weight of a vehicle change its height
( ) If the road surface causes you vehicle to tilt toward the edge of the road, you should drive close the shoulder
61.下列哪个关于净通过高度？
（2）车辆重量会改变其高度

62. What should you do if a car coming toward you at night keeps its high beams on?
( ) Flash your high beams at the other driver
(x) Look to the right edge of your lane or right side of the road
( ) Slow down and look straight ahead in your lane
62. 晚上有辆车向你行驶过来并且开着远光灯，你应该怎么做
（2）正确的看着你的车道的右侧或路的右侧的边缘

63. The road you are driving on becomes very slippery due to ice. Which of these is a good thing to do?
(x) Stop driving as soon as you can safely do so
( ) Downshift to stop
( ) Keep varying your speed by accelerating and braking
63. 你驾驶的道路由于冰变得非常湿滑,这时最好怎么做？
（1）在保证安全的前提下尽快停止驾驶。

64. Which of these statements is true about cold-weather driving?

( ) An engine cannot overheat when the weather is very cold
(x) Windshield washer antifreeze should be used
( ) Exhaust system leaks are less dangerous in cold wather
64.下列哪个关于寒冷天气驾驶的陈述是正确的？
（2）挡风玻璃应使用防冻液清洗

65. Which of these especially true about your tires in hot weather?
(x) You should check tire mounting and air pressure before driving
( ) If tire is too hot to touch, you should hose it down with water
( ) A small amount of air should be let out so air pressure remains steady
65. 在炎热的天气你的轮胎那些是需要特别注意的？
（1）你在开车前应检查轮毂和气压

66. When driving through roadway work zones, you should:

( ) Reduce speed only if workers are close roadway
( ) Turn on your parking lights
(x) Watch for sharp pavement drop-offs
66. 当驾驶通过工作区域时，你应该？
（3）注意路面上的坎或台阶

67. When you must leave the road to avoid a hazard or emergency, you should keep in mind that:
( ) Most shoulders are not strong enough to support the weight of a large vehicle
(x) It is less dangerous to drive onto the shoulder than to risk a collision
() You may be unable to re-enter the rode
67. 当发生危险或紧急情况你必须离开道路，你应该牢记:
（2）开到路肩上行驶的风险比碰撞小

68. What should you do when your vehicle hydroplanes?

( ) Start stab braking
(x) Release the accelerator
( ) Accelerate slightly
68. 当您的车辆在潮湿的道路上开始打滑，你应该怎么做，:
（2）松开油门

69. Which of these is important to remember about emergency braking?

( ) Disconnecting the steering axle brakes will help keep your vehicle in a straight line
(x) If the wheels are skidding, you cannot control the vehicle
( ) Never do it without downshifting first
69. 关于紧急制动哪一项是重要且需要牢记的:
（2）当车轮打滑，你将无法控制车辆

70. Which of these is good thing to do when you steer to avoid a crash?
( ) Apply the brakes while turning
(x) Don’t turn the steering wheel any more than needed
( ) Avoid counter steering
70. 当你操作避免碰撞的时候，需要如何操作？
（2）不要过多的转动方向盘

71. Which of these happens when a tire blows out at highway speeds?
(x) A vibrating feeling
( ) A hissing sound
( ) A rapid drop in speed to less than 20 mph
71. 下列哪些情况可能是在高速公路上行驶时爆胎？
（1）振动的感觉

72. To correct a drive- wheel braking skid, you should:

(x) Stop braking
( ) Stop braking, turn quickly, and counter steer
( ) In crease braking, turn quickly, and counter steer
72. 要修正驱动轮制动防打滑，你应该
（1）停止刹车

73.. Which of these statements is true about cargo types?

(x) Unstable loads (e.g., hanging meat, and livestock) require extra caution on curves
( ) Oversize loads can be transported with special permits when roads are not busy
( ) Tank vehicles used to transport liquids should always be fully loaded
73. 下列哪一项是真实的有关货物种类
（1）过弯时不稳定的负载（例如，挂肉，和牲畜）需要格外小心

74. Where or how cargo blocking used?

( ) Loosely around the cargo
( ) From the upper part of the cargo to the flood
(x) In the front, back, and/or sides of the cargo
74. 在哪里使用或如何使用货物限位器
（3）在货物的前面，背部，或货物两边

75. Which of these is not part of the engine compartment pre-trip inspection?
( ) Engine oil level
(x) Valve clearance
( ) Checking for worn electrical wiring insulation
75.下列哪个不是发动机舱行前检查的一部分？
（2）气门间隙

76. You are checking your tires your during a pre-trip inspection. Which of these statements is true?
(x) Tires of mismatched size should not be used on the same vehicle
( ) Radial and bias-ply tires can be used together on the same vehicle
( ) A 2/32-inch tread depth is safe for the front tires
76. 下列关于行前检查中检查轮胎的描述，正确的是？
（1）不应在同一辆车上使用大小不匹配的轮胎

77. What is the most important reason to inspect your truck or bus?
(x) Safety
( ) It’s the law
( ) To avoid being cited
77.检查您的卡车或巴士，最重要的原因是什么：
（1）安全

78. You do not have a Hazmat endorsement on your commercial driver license, you may drive a vehicle
transporting hazardous materials when:
( ) The GVWR is 26,001 pounds or less
(x) The vehicle does not require placards
( ) A person with a HZAMAT endorsement rides with you
78. 您的商业驾驶执照上没有危险品认可，什么情况下您可以驾驶运输危险材料的车辆:
（2）车辆不需要标牌的时候

79. Where must you keep shipping papers when transporting hazardous materials?
( ) Under the driver’s seat
(x) In a pouch on the driver’s door or on the seat
( ) In the glove compartment, which must be locked
79 运输有害物质时，你必须始终把运输文件放在哪里？
（2）在驾驶员车门上或座位上的小袋中。

80. You are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the shoulder
while driving on an uphill grade. Which of these is a good rule to follow when putting the vehicle back in
motion?
( ) Keep the clutch slipping while slowly accelerating
(x) Use the parking brake to hold vehicle until the clutch engages
( ) Let the vehicle roll backwards a few feet before engaging the clutch
80. 你驾驶重车辆，手动变速箱。你把车停在上坡的路肩上，当车辆准备恢复运行。以下说法哪一种是对的？
（2）保持车辆使用驻车制动，直到离合器接合

81. To prevent brake “fade”, you should:

(x)Select a gear which will keep your vehicle to a safe speed on steep downgrades
( ) Apply constant hard pressure on the brakes when driving downhill
( ) Coast down hills that are not very steep inclines
81. 为了防止刹车“失效”，你应该：
（1）在保证安全速度的前提下，选择一个较低的档位。

82. After driving for several hours on a long trip, you are feeling sleepy. What is the best thing to do?
(x)Park in a safe place and take a nap
( ) Open your window to breathe fresh air
( ) Stop for a strong cup of coffee
82. 开车几个小时长途旅行后，你感觉昏昏欲睡。这时候最好做什么？
（1）把车停在一个安全的地方，睡上一觉。

83.Which of these statements is true about drugs?

( ) A driver can use any prescription drug while driving
(x) Use of drugs can lead to collisions and/or arrest
( ) Certain prescription drugs are allowed to reduce fatigue
83.下列对于毒品哪个是正确的说法
（2）使用某些药物和毒品会造成事故/被逮捕

84.For a first offense of driving a commercial vehicle under the influence of alcohol or drugs, you will lose your
CDL for at least:
( ) 6months
(x) 1 year
( ) 2 year
84.服用酒精或者毒品之后驾驶，你将至少被扣留多久的驾驶资格
（2）1 年

85.“Implied consent” means when you sign the driver license application form, you:
( ) Understand that you may drink alcohol now before driving
(x) Give your consent to be tested for alcohol in your blood
( ) Give your consent to a vehicle inspection for alcohol
85. 当你签署驾驶申请表时“默认同意”了什么：
（2）默认同意了做血液酒精测试

86.You should use your mirrors to check:

( ) If your running lights are working properly
( ) Blind spots only
(x) Where the rear of your vehicle is while you make turns
86.你应该检查你的反光镜？
（3）在你转弯时利用反光镜检查车后边的情况

87.When you must stop on a one-way or divided highway, you should place your reflective triangles at which of
the following locations
(x) 10 feel, 100 feet, and 200 feet toward approaching traffic
( ) 10 feel, 100 feet, and 500 feet toward approaching traffic
( ) 10 feel, 50 feet, and 100 feet toward approaching traffic
87. 当你必须在单车道或高速公路停车时，你应该把警告三角牌放置在：
（1）面向驶来的车流,距离自己的车辆 10 英尺，100 英尺，直到 200 英尺

88. What will help keep an engine cool in hot weather

( ) Driving objects appear larger than they really are
( ) Running the air conditioner
(x) Making sure the engine has the right amount of oil
88.在炎热的夏天如何保持发动机的冷却
（3）确保发动机油足够的机油

89. Convex（curved） mirrors:

( ) Make objects appear larger than they really are
( ) Make objects appear closer than they really are
(x) Show a wider area than flat mirrors show
89. 凸面镜
（3）比平面镜速显示更大的区域

90. The purpose of retarders is to:

(x) Help slow the vehicle while driving and reduce brake wear
( ) Apply extra braking power to the non-drive axles
( ) Help prevent skids and reduce brake wear
90.减速器的作用是：
（1）在驾驶时有助减缓和减少制动器的磨损

91. The braking effect of the engine is greatest when the engine is____the governed RPMs and the transmission
is in the ____gears
( ) Above, lower
( ) Below, higher
(x) Near, lower
91.当发动机转速运行在____可控制的转速下，变速箱____档位，发动机制动的效果最大
（3）近，较低

92. What is counter steering?

( ) Turning the steering wheel counterclockwise to prevent over steering
( ) Using the steering axle brakes to prevent over steering
(x) Turning the steering wheel back in the other direction after steering to avoid traffic emergency
92.什么事反转向：
（1）转向后将方向盘向另一个方向转回，以避免交通紧急情况

93. What is the term for a commercial vehicle’s habit of swinging wide on turns?
(x) Off tracking
( ) Wide-rounding
( ) Side winding
93.什么是商业车辆超过自己车道转弯时的常规动作
（1）占道驾驶

94. it’s important to shift gears correctly to keep:

(x) Control of the vehicle
( ) The engine warm
( ) The engine oil flowing
94.保持正确的换挡很重要是因为可以？
（1）控制车辆

95. Which of these is NOT a danger when an automatic transmission is forced into a lower gear at high speed?
( )Damage to the transmission
( )Loss of engine braking effect
(x)Loss of steering control
95.当驾驶自动档的车时，高速下强行切入低档位不会造成下列哪种危险？
（3）导致失去操控力

96. You should signal continuously while turning because:

(x) You need both hands on the wheel to turn safely
( ) It is illegal to turn off your signal before completing a turn
( ) Most vehicles have self-canceling signals
96.您应该在转弯时连续发出信号，因为
（1）你需要把双手放在方向盘上，确保安全

97. When approaching a traffic light that has been green for a long time, you should
( ) Accelerate so you get through the light
(x) Start slowing down so you will be ready to stop
( ) Continue at your current speed
97. 当接近一个红绿灯且此灯已经亮起很长时间了，你应该
（1）放慢车速，随时准备停车

98. Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?
(x) Heavy vehicles need larger gaps in traffic than cars
( ) The best way to cross traffic is to pull the vehicle partway across the block one lane while waiting for the
other to clear
( ) Heavy vehicle are easy to see; you can count on other drivers to move out of your way or slow down for you
98.当重型卡车穿过或者并入道路时要谨记
（1）重型卡车需要更大的间隙

99. What three things add up to the total stopping distance for your truck of bus?
( ) Attention distance, reaction distance, slowing distance
( ) Observation distance, reaction distance, braking distance
(x) Perception distance, reaction distance, braking distance
99.哪三件事加起来等于你的总制动距离
（3）感知距离，反应距离，制动距离
100. If you cannot see well with your headlights when driving in an area with few streetlights on a clear night,
you should
( ) Turn your interior light on
( ) Find another route that is better lit
(x) Use your high beams when legal and keep your interior light off
100. 在天气良好的夜晚，如果路灯不足以让你看清道路，你应该
（3）依法使用你的远光灯，同时关闭车内灯光

101. When driving at night, use your low beams when an oncoming vehicle is within
( ) 300 feel
( ) 400 feel
(x) 500 feel
101. 在夜间行车，当有车辆迎面驶来时距离多少内应使用近光灯？
（3）在 500 尺内

102. If your brakes get wet while driving on a rainy day, what can happen when you apply the brakes?
( ) Hydroplaning
( ) Excessive brake wear
(x)Trailer jackknife
102.如果在雨天驾驶，刹车已湿，您踩刹车时会发生什么
（3）拖车翻折

103. What is the best advice for drivers to follow when a heavy fog occurs?
(x) Pack at a rest area or truck stop until visibility is better
( ) DO not drive too slowly, or other drivers may hit you
( ) Alternate you low and high beams to improve your vision
103.碰到大雾天气，最好的应对方法是什么
（1）停在休息区卡车停放区，直到能见度较好

104. You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for
you. Which of these is the best action to take?
( ) Brake hard
(x) Steer to the right
( ) Steer onto the left shoulder
104.你在两条车道的路上行驶，这时对面车道上的车辆漂移到你的车道，直奔你而来，你应该
（2）转向右侧车道躲避

105. Which of these is a danger of crossing railroad tracks on dirt roads?

(x) The ground underneath the tracks may not be stable
( ) You could get hung up halfway across the tracks
( ) Your tires could sink into the dirt and not cross the tracks
105．在一个泥泞道路上跨越铁轨，可能遇见下列哪个情况
（1）地面下的铁轨可能不太稳定

106. To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 mph on the shoulder.
How should you move back onto the pavement?
(x) If the shoulder is clear, stay on it unit your vehicle comes to a stop. When move back onto the pavement
when it is safe
( ) Brake hard to slow he vehicle then, steer sharply onto the pavement when it is safe
( ) Keep moving at your present speed and steer very gently back onto the pavement when it is safe
106.你正在以 40 英里的时速驾驶，为了避免碰撞，你应该如何开到右路肩，而后如何回到路上：
（1）如果右路肩是干净和宽敞的，开到右路肩，然后安全的把车停下来，当安全的时候再回到路面。

107. You are driving on a straight, level highway at 50 mph with no vehicles in front of you. Suddenly, a tire
blows out on your vehicle. What should you do first?
(x) Stay off the brake until the vehicle has slowed down
( ) Begin lightly braking
( ) Begin emergency braking
107.你以 50 英里每小时的速度直线行驶在高速公路上，没有车辆在你前面，轮胎突然爆胎，你应该怎么样：
（1）踩住刹车，慢慢的将车停下

108. If you need to leave the road in a traffic emergency, you should
( ) Try to get all wheels off the pavement
(x) Avoid braking until your speed has dropped to about 20 mph
( ) Avoid driving on the shoulder of the road
108. 如果你需要离开道路进入应急车道，你应该
（2）避免制动，直到你的速度已经下降到约 20 英里

109. When hydraulic brakes fail, the system won’t build up pressure and the brake pedal will feel spongy of go
to the floor. What action should you take?
( ) Push down on the brake pedal as hard as you can
(x) Pump the brake pedal to generate pressure
( ) Put the vehicle in neutral and set the parking brake
109. 液压制动器失效时，系统无法将压力传送到刹车踏板，会感到刹车踏板很软。你应该采取什么行动？
（2）反复踩刹车踏板，是其恢复制动压力

110. A key principle to remember about loading cargo is to keep the load:
( ) To the front
( ) To the car
(x) Balanced in the cargo area
110. 记得装货的一个重要原则是，以保持负载：
（3）货物区平衡堆放

111. Containerized loads

( ) Should come with their own tie-down devices or locks
(x) Are generally used for freight carried part way by rail or ship
( ) Do not need to be inspected or secured by the driver
111. 集装箱负载：
（2）通常通过铁路或船舶进行货运的一种方式。

112. You are performing a pre-trip inspection on your brakes and suspension system. Which of these
statements is true?
( ) Just one missing leaf spring is not dangerous
( ) Spring hangers that are cracked but still tight are not dangerous
(x)Brake drums should not oil or grease on them
112. 以下说法中对于制动系统和悬挂系统的行前检查正确的是？
（3）刹车鼓上不应该有油或油脂

113. You are checking your wheels and rims during a pre-trip inspection. Which of these statements is true?
(x) Rust around wheel nuts may mean they are loose
( ) A vehicle can be safely driven with one missing lug nut on a wheel
( ) Mismatched lock rings can be used on the same vehicle
113. 行前检查中关于车轮和轮辋的部分检查。正确的是？
（1）车轮螺母生锈可能意味着他们有松动

114. Can federal inspectors inspect your truck or bus?

( ) Yes, but they cannot put it out of service
(x) Yes, and they can put it out of service
( ) No
114. 联邦检查员可以检查您的卡车或巴士
（2）是的，他们可以停止您的服务

115. When starting to move up a hill from a stop:

(x) Release the parking brake as you apply engine power
( ) Engage the clutch and accelerate quickly
( ) Keep the trailer brake hand calve applied until you reach 20 mph
115. 如何从停车开始运行并上坡：
（1）松开驻车刹车，踩油门提高发动机输出

116. When driving on grades, which of these is the best choice for a safe speed?
( ) If you have a light load, you can go faster than those with a heavy load
(x) Based on your vehicle and its cargo., select a speed that is safe within the posted speed
( ) Follow the vehicle in front of you
116.当行驶在公路上时，关于安全速度的最佳选择是什么？
（2）根据你的车型和载有的货物，选择张贴速度表上合适的速度和档位

117. Truck and buses are subject to certain laws, regulations, and restrictions. Which of these statements is
true?
( ) County and city laws do not apply to trucks and buses engaged in interstate commerce
( ) Federal regulations apply only to trucks and buses driven at least 50 miles on a trip
(x) Laws and restrictions can vary from place to place
117. 卡车和客车受某些法律，法规和限制的约束。 以下哪些陈述是正确的
（3）法规和约束，因地而异

118. When a doctor prescribes medication for you and know you will be driving, you should:
( ) Take the medication, but stop taking it if you notice that it is affecting your driving
( ) Take the medication, as well as other medication to keep you alert
(x) Ask the doctor if the medication will affect your ability to drive
118.当医生给你的药物可能会影响您的安全驾驶时，你应该
（3）询问医生，药物是否会影响您的驾驶能力

119. Aggressive driving is:

()Driving a vehicle with the intent to do harm to others.
()Driving a vehicle when your full attention is not on driving.
（x）Driving a vehicle is a selfish ,bold or pushy manner.
119. 激进驾驶行为：
（x）驾驶车辆是一种自私，大胆 或粗鲁的方式。

120. When you are passing another vehicle, pedestrian , or bicyclist, you should assume that they:
()Know you want to pass
()See you vehicle
(x) May move into traffic
120. 当你经过另一辆车，行人或骑自行车时，你应该假设他们
(3) 可能会进入交通状况

121.what should you do before driving in the mountain

(x) Know the escape ramp location on your route
()unhook you steering axle brake
()carry tire chain in your vehicle
121. 在进入山区路前你应该做些什么？
（1）了解路线上的逃生坡道位置

122. The Commercial Driver Handbook suggest several things to do when you pass a vehicle. Which of these is
not of them?
驾驶员手册建议超车时不要做的事？
（x）At night, turn on your high beams while you pass the vehicle
晚上，在超车时使用远光灯
（）lightly tap your horn , if needed.
( )Assume the other vehicle does not see you.

123.If you _____ slower because of a Distraction , a chance of a crash can double.
如果你因为注意力不集中而慢了 ，导致发生碰撞的机会翻倍。
() a quarter –second
()one second
(x) a half- second 1/2 秒

124.Optional safety equipment may include emergency phone numbers , tire, chains, and:
可选的安全设备可能包括紧急电话号码，轮胎，链条和：
()Fully charged fire extinguisher.
()Red reflective triangles.
(x)Tire changing equipment 轮胎更换设备

125.Which of the following is a good way to react to an aggressive driver?

以下哪项是应对激进的驾驶员的好方法
()Smoke a cigarette to relax
(x)Give the driver the benefit of the doubt.
在未清楚整個真相前，如果莽下結論，便有機會錯怪好人，所以情願〝有放過，無殺錯〞
()Change the CD or have a snack.

126. Which of these statements is not true about engine belts in hot weather?
在炎热的天气里，关于发动机皮带不正确的是
A) Cracking is likely to occur but is not a safety threat.
B) Loose belts will not turn the water pump and/or fan on properly.
C) You can check the tightness of the belts by pressing on them.
A) 可能会发生破裂，但不是安全威胁.

127. When braking for an emergency stop, with a vehicle that has anti-lock brakes on all axles, you should:
当紧急制动停车时，如果车辆在所有车轴上都有防抱死制动器，您应该：
A) Pump the brakes until ABS takes over.
B) Apply full brakes.
C)Brake with enough force to maintain control.
B) 应用全部刹车

128. The average driver needs ____ hours of sleep every 24 hours.
平均下来，驾驶员每 24 小时需要多少小时的睡眠时间
A) 7-8
B) 3-4
C) 5-6
A) 7-8

129. When driving at night, you should:

夜间开车，您应该
A) Adjust your speed to keep your stopping distance within your sight distance.
B) Look to the left side of the road when a vehicle is coming towards you.
C) Dim your lights within 300ft of an oncoming vehicle.
A) 调整您的速度，使您的停车距离保持在您的视距内。

131. You are required to stop at a railroad grade crossing when:

下列情况下，您必须在铁路和公路交叉口停车
A) The vehicle makes a stop mandatory under state or federal regulations.
B) There are flagmen, warning signals, or gates at the crossing.
C) The crossing is located in a city or town with frequent train traffic.
A) 根据联邦或州法规定，您必须停车

133. It takes a typical tractor trailer at least ____ seconds to clear a single track railroad-highway grade crossing.
一个标准拖车至少需要多少秒才能完全通过一个单轨铁路和高速的交叉口
A) 18
B) 14
C) 10
B) 14

134. You may get hung up on railroad tracks when:

在下列情况下，您可能会被刮住在铁轨上：
A) You try to shift gears when crossing.
B) The tracks have a steep approach.
C) The posted speed is too slow.
B) 轨道很陡.

135. You are checking your steering and exhaust system in pre-trucking inspection. Which of these problems
should be fixed before the vehicle is driven?
正在进行行前检查中的转向和排气系统检查。其中，在车辆行驶之前应该修复哪些问题？
A) Steering wheel play, no-more than 10%/2-inches on a 20in steering wheel.
B) Grey smoke from the exhaust pipe.
C) Oil on the tie rod.
A) 方向盘游隙，不超过 10％ （2 英寸/10 英寸轮上）。

138. What should you do when you see a hazard in the roadway?
当你发现路上有危险的时候应当做些什么？
A) Use your 4-way flashes or brake lights to warn others.
B) Swerve around it and get back in your lane.
C) Come to a complete stop until hazard is clear.
A) 使用 4 向闪灯，或者刹车灯来警示危险.

139. Which of these statements is true about acceleration?

关于加速，这些陈述中哪一个是正确的
A) Rough acceleration can cause mechanical damage.
B) You should feel a "jerking" motion if you are accelerating your vehicle properly.
C) Using the trailer brake when starting is dangerous.
A) 粗加速会导致机械损坏。

140. The vehicle you are driving has anti-lock brakes if:
当您驾驶的车辆有 ABS 系统时。
A) When you turn on the ignition, a yellow ABS malfunction lamp lights up on the instrument panel.
B) The certification is on the driver-side door.
C) Read indicator lamps are on the brake cylinder.
A）当您打开点火开关时，仪表板上的黄色 ABS 故障指示灯会亮起。

141. If you cannot see well with your headlights, when driving in an area with few streetlights on a clear night,
you should:
如果您的前照灯看不清楚，那么在晴朗的夜晚在路灯很少的地方开车时，您应该：
A) Use your high beams when legal and keep your interior lights off.
B) Turn your interior lights on.
C) Find another route that is better lit.
A) 合法时使用远光灯，关闭室内灯。

142. The space that is most important to manage around your vehicle is the:
位于车辆的哪一部分的空间管理最重要
A) Back
B) Front
C) Sides
B)前面，面前

143. What happens to tar in road pavement during hot weather?

在炎热的天气里，路面沥青会发生什么变化？
A) Nothing, it is made for hot weather.
B) It bleeds, making the road surface slippery.
C) It becomes gummy, making tires stick to the road.
B)有液体渗出来，使路面变滑.

144. If you must cross into the oncoming lane as you make a turn, you should:
如果你在转弯时必须进入迎面而来的车道，你应该这样做
A) Complete your turn without stopping.
B) Back up to allow oncoming traffic to pass.
C) Watch for oncoming traffic.
C）留意迎面的交通情况。

145. If you are not sure how to put out a hazardous material fire, you should:
如果您不确定如何扑灭有害物质火灾，您应该：
A) Wait for qualified firefighters.
B) Use dirt.
C) Use water.
A) 等待专业的消防员。

146. Which of the following is true about anti-lock braking systems?

关于 ABS 系统，哪些说法是正确的
A) ABS changes the way you brake in an emergency.
B) ABS allows you to drive faster, follow more closely, or drive less carefully.
C) ABS prevents power turning skids.
A)ABS 改变了您在紧急情况下制动的方式。

147. Which of these statements is true about backing a heavy vehicle?

关于重型车辆倒车，这些陈述中哪一个是正确的？
A) It's safer to back towards the right side of the vehicle.
B) You should avoid backing whenever you can.
C) Helpers should be out of sight and use only voice(spoken) signals to communicate with the driver.
B) 你应该尽可能避免倒车。

148. You are driving a long vehicle that makes wide turns. You want to turn left from Pine St. into Cedar St.
Both are two-lane, two-way streets. You should?
你正在驾驶一辆长转弯的长车。 您想从 Pine St.左转进入 Cedar St.这两条街都是双车道的双向街道。 你应该？
A) Begin turning your vehicle when halfway through the intersection.
B) Begin turning your vehicle as soon as you enter the intersection.
C) Turn into the left lane of Cedar St. and move to the right lane when the traffic is clear.
A) 直行在交叉路口中途开始转弯。

150. If you do not have a CB radio, what is the first thing you should do at a collision scene?
如果你没有民用电台，你应该在碰撞现场做的第一件事是什么？
A) Care for the injured.
B) Protect the area.
C) Notify the authorities.
B) 保护该地区，保护现场.

151. You are driving a heavy vehicle. You must exit a highway using an off ramp that curves downhill. You
should?
你驾驶的是重型车辆。 您必须使用弯道下坡坡道离开高速公路。 你应该？
A) Slow down to a safe speed before the curve.
B) Wait until you are in the curve before the downshifting.
C) Slow to the posted speed limit for the off ramp.
A）在进入弯道前减速到安全速度。

153 When looking ahead of your vehicle, you should look:

当注视你的车辆前方时，你应该看？
A) To the right side of the road.
B) Straight ahead at all time.
C) Back and forth, near and far.
C）来回，远近。

154. Trucks and buses are subject to certain laws, regulations, and restrictions. Which of these statements is
true?
卡车和客车受某些法律，法规和限制的约束。 以下哪些陈述属实？
A) Laws and restrictions can vary from place to place.
B) Federal regulations apply only to trucks and buses driven at least 50 miles on a trip.
C) County and city laws do not apply to trucks and buses engaged in interstate commerce.
A）法律和限制因地而异

155. Which of these statements is true about mirror adjustment?

关于后视镜调整，这些陈述中哪一个是正确的？
A) You should adjust your mirrors before you start a trip.
B) The mirrors can be adjusted correctly even if the trailer is not straight.
C) You can adjust the mirrors while you are driving.
A）您应该在开始旅行之前调整镜子。

156. Which of these statements is true about shipping hazardous materials?

有关运输危险材料的哪些陈述是正确的？
A) A four-inch, diamond shaped, hazardous materials label must be on the container.
B) A four-inch, circular, red hazardous material label must be on the container.
C) Gas cylinder that will not hold a label must be shipped under cover.
A）容器上必须有一个四英寸的菱形危险材料标签。

157. You need at least ___ inch tread depth in every major groove of your front tires.
在前轮胎的每个主要凹槽中，您需要至少___英寸的胎面深度。
A) 4/32
B) 6/32
C) 2/32
A) 4/32

158. Which of these is not a danger when an automatic transmission is forced into a lower gear at high speed?
当自动变速器高速进入低速档时，哪一个不会造成危险？
A) Loss of engine braking effect.
B) Loss of steering control.
C) Damage to the transmission.
B）失去转向控制。
163. Which of these is not something you should do if your headlights are not working?
如果您的前大灯不工作，您应该怎么做？
A) Adjust the headlights.
B) Leave your high beams on.
C) Clean the headlights.
B）开着你的远光灯。

164. If you are forced to return to the road before you can stop on the shoulder, you should?
你停在路肩上，你想回到公路上去，你应该怎么做？
A) Use mirrors and turn signals, turn sharply to get back on the road.
B) Use mirrors and turn signals, edge gradually back on the road.
C) Drive on the shoulder till next exit and then re-enter the road.
B）使用镜子和转向信号，从边上开始逐渐的回到路上。

165. When driving in cold weather, your tires tread should:

在寒冷天气驾驶时，您的轮胎胎面应该：
A) Provide enough traction to steer and push the vehicle through the snow.
B) Be double the depth required in normal weather.
C) Be checked every 100 miles or every two hours.
C）每 100 英里或每两小时检查一次。

166. How does vehicle weight affect stopping distance?

A) Fully loaded trucks take longer to stop.
B) It doesn't work the same regardless of the vehicle weight.
C) Empty Trucks can take longer to stop than loaded trucks.
166.车辆重量如何影响停车距离？
空卡车比负重卡车需要更长时间才能停下来

167. The speed which you drive should be determined by your:

您驾驶的速度应该取决于：
A) Schedule
B) Visibility
C) Engine type
B)视野范围

171. Which of these systems should receive extra attention during a winter weather inspection?
在冬季天气检查中，哪些系统应该得到额外的关注？
A) Steering
B) Suspension
C) Exhaust
A)转向

172. Having anti-lock brakes, on only the tractor will:

只有拖头有防抱死制动器的时候：
A) Increase the likelihood of rear wheel skid when braking.
B) Decrease the likelihood of rear wheel skid when braking.
C) Anti-lock brakes should always be on.
A）制动时增加后轮打滑的可能性。
173. A helper should be used to help back your vehicle:
应该使用帮手来帮助你倒车：
A) Whenever possible A）尽可能
B) When you have a trailer on your vehicle
C) When you need to back on a curved path.

175. A car suddenly "cuts" in front of you creating a hazard. Which of these actions should you not take?
一辆汽车突然“切入”在你面前造成危险。 你不应该采取以下哪些行动？
A) Slow down to prevent a crash.
B) Signal and change lanes to avoid the car, if possible.
C) Honk and stay close behind the car.
C) 鸣笛并紧紧的尾随它

178. If the anti-lock brake system is not working, you should:

如果 ABS 系统不能工作，你应该？
A) Not drive until it is repaired.
B) Drive at a lower speed
C) Drive normally, but get the system service soon.
C) 正常驾驶，但尽快进行系统服务。

180. Whenever you double your speed , your vehicle has about _____ times the destructive power if it crashes.
当你的速度达到两倍的时候，如果发生碰撞，你的车破坏力大约是几倍。
A) Two
B) Three
C) Four
C) 4

181. Which of these items is not checked in a pre-trip inspection?

哪些项目不是出发前检查的项目？
A) Amount of fuel in the vehicle.
B) Cargo seducement.
C) Whether all vehicle lights are working and clean.
A) 燃料数量

183. When you drive in the mountains, you will have to use lower gears to drive safely down grades. Which of
these does not affect your choice of gears?
当你驶进山区，你将使用低档位来保证下坡行驶的安全性，以下哪项不影响你的档位选择？
A) Tire tread types
B) Weight of the load
C) Length of the grade
A)胎面类型

184. one reason that dry bulk tanks require special care is:
干散货舱需要特别注意的一个原因是
A) The load can shift
B) They can only be filled halfway
C) They can easily catch fire
A) 载荷会移动

185. Which of these statements is ture about double-clutching and shifting?

关于双离合和换挡，哪项是正确的？
A) You can use the tachometer to tell you when to shift
B) Double-Clutching should not be used when the road is slippery
C) County and city laws do not apply to trucks and buses engaged in interstate commerce.
A) 转速表能告诉你什么时候换挡

186. A broken exhaust system is dangerous because ?

排气系统损坏会带来危险，因为
A) Exhaust noise will damage the driver's ears
B) Toxic fumes and gasses could enter the cab or sleeper berth
C) The leaking exhaust smoke pollutes the air
B）有毒烟雾和气体可能进入驾驶室或休息舱

187. Which of these statements is true about notifying authorities after a collision occurs?
以下关于发生碰撞后通知当局的哪些陈述是正确的？
A) An exact location is not necessary, just identify the road and the vehicles involved
B) If you have a CB radio or a cellular phone, use it to notify the police before exiting your vehicle.
C) You should notify authorities about the collision before doing anything else
B) 如果您有民用无线电或手机，请在开车离开前通知警方。

188. How can you identify an impaired driver?

你如何识别高风险驾驶员？
A) The vehicle is drifting across lanes and moving at variable speeds
B) The vehicle is weaving in and out of traffic
C) The vehicle is speeding
A) 车辆在车道间漂移并以很快的改变速度

189. Backing a commercial vehicle is:

倒车对商用车意味着：
A) Not dangerous if you have a helper
B) Always dangerous
C) Not dangerous if you do no have to turn
B) 总是存在危险的

191. Which statement is true about using engine braking?

关于引擎制动的正确陈述时什么？
A) Engine braking should not be used as the main way to control speed
B) It creates extra heat between the brake shoes or pads and the drum(s) or disks.
C) The use of brakes on a downgrade adds to the braking effect of the engine.
C) 在下坡时，使用发动机的制动器会增加制动效果。

192. Which vehicle will have the most difficulty staying in its lane during strong winds?
在强风中，影响车辆留在自己车道里的最大的问题是？
A) Trailer jackknife
B) Hydroplaning
C) Excessive brake wear
B) 打滑

193. Retarders can be used:

什么情况下可以使用减速器
A) Only where they are permitted by law
B) Only for downhill braking
C) Only on roads with poor traction
A) 只有在法律允许的情况下

194. You must stop on a hill or curve on a two-lane, two-way road. How face back should you place your
reflective triangles?
你必须停在在一条有两条车道的山坡上或弯道上， 你应该如何面向后方放置你的反光三角警示牌？
A) Within 500 feet behind the vehicle
B) Within 250 feet behind the vehicle
C) As far back as necessary, so others can see your vehicle
A) 放置在车辆后方 500 英尺的范围里

198. After starting the engine, the:

在启动引擎后，以下情况正确的是
A) Oil pressure gauge should take 3-5 minutes to rise to normal
B) Coolant temperature gauge should begin a gradual rise to normal
C) Engine temperature gauge will take 3-5 minutes to rise to normal
B) 冷却液温度应开始逐渐上升至正常温度

199. Which of these is not required knowledge for driver needing HazMat endorsement?
对于需要具备危险品运输许可的驾驶员而言，哪些不是必需的知识？
A) When to use placards
B) Which products can be loaded together
C) Basic chemistry
C）基础化学

200. Placards must be:

标牌必须放置在
A) Placed on all four sides of vehicle.
B) Display on all vehicles transporting any amount of hazardous materials.
C) Places only on the front and rear of a vehicle.
A）放置在车辆的四个面.

201. Which of the following is not a characteristic of a front tire failure?

以下哪项不是前轮胎故障的特征？
A) Vehicle fishtail
B) Difficult steering
C) Steering wheel twisting
A) 车辆会甩尾

202. If you have a heavy load that is slowing you down on a upgrade, you should:
如果重载导致上坡变慢，你应该：
A) Drive on the shoulder so other can pass easily
B) Exit the road until traffic is lighter
C) Shift into a lower gear
C) 换入低档位

203. If you do not have a CB radio, what is the first thing you should do at a collision scene?
如果你没有民用电台，你应该在碰撞现场做的第一件事是什么？
A) Care for the injured.
B) Protect the area.
C) Notify the authorities.
B) 保护该区域。

204. When you are parked at the side of the road at night, you must?
当你在晚上停在路边时，你必须
A) Use your taillights to give warning to other drivers
B) Put out your emergency warning devices within 30 minutes
C) Turn on your 4-way emergency flashers to warn others
C) 打开您的 4 个方向上的紧急闪灯以警告其他人

205. What does emergency braking mean?

紧急制动意味着什么？
A) Using the vehicle's emergency brake
B) Responding to a hazard by slowing the vehicle
C) Pushing down on the brake pedal as hard as you can
B) 通过减慢车辆来应对危险

206. Over-length, over-width, or over-weight loads:

超长，超宽或超重负载：
A) Must be escorted by police
B) Can only be driven in daylight
C) Require Caltrans transit permits
C) 需要加州交通局的过境许可证

207. A pre-trip inspection should be completed:

在什么情况下应该完成出发检查。
A) At least once a week
B) If any problems occurred the last time the vehicle was operated
C) Before operating the vehicle
C) 在操作车辆之前

208. Which of the following is the correct term for a long commercial vehicle's tendency to swing wide turns?
哪一项是关于长商用车辆在转弯时宽度会横向摆动的正确描述？
A) Sidetracking
B) Off tracking
C) Fishtailing
B)压线

209. When a coolant container is part of a pressurized system, you can:

当冷却剂容器是加压系统的一部分时，您可以：
A) Check the coolant level of a hot engine
B) Safely remove the radiator cap and add coolant while the engine is hot
C) Use water only in the cooling system
A) 检查热的发动机的冷却液液位

214. Which of these items is checked in a pre-trip inspection?

在行程前检查中检查了哪些项目？
A) Cargo securment
B) whether all the vehicle lights are working and clean
C) Both of the above
C)以上全部

216. You should plan ahead when you park your vehicle so that:
当您停放车辆时应该提前计划，以便：
A) It will be very easy for you to check you vehicle before you get on the road
B) You are only required to pull forward when you leave
C) You don't need to back up more than ten feet
B) 当需要离开的时候，只需要向前开

217. The term " Gross combination weight " refers to that :
组合重量的意思是
A) Total weight of powered unit and the trailer
B) Total weight of the trailer and the load
C) Total weight of a powered unit, the trailer and the cargo
C) 动力单元，拖车和货的总重量

219. Which of the statements is true when you are performing a pre-trip inspection on your brake and
suspension system ?
当您对制动器和悬架系统进行行程前检查时，哪一项陈述是正确的？
A) Brake shoes should be free of oil grease and break fluid
B) One missing leaf spring is not dangerous
C) A cracked spring is not dangerous
A) 制动片应无油脂和制动液

新题

1. Stab braking should not be used on a vehicle with:

不得在什么车辆上使用点刹（一脚踩死然后放开，再重复）：
A) Anti-lock brakes
B) Trailers
C) Hazardous materials.
A)有 ABS 系统的车

3. Most skids:绝大多数打滑
(x)Are caused by going too fast or trying to stop too quickly.
是因为开的太快或者想很快的停下来导致的
4. In a bad weather many car drivers tailgate large vehicles. What should you do?
在恶劣的天气很多小车司机尾随大型车辆，你该怎么办？
(x) Increase Your following distance. 增加你的跟车距离

5. Which of the following systems should receive extra attention during winter weather inspection?
在冬季天气检查中，下列哪个系统应该得到额外的关注？
(x) Exhaust. 排气系统

9. In mountain driving you will have to use a lower gear to drive safely on a grade. Which of these does NOT
affect your choice of gear?
在山地驾驶中，您必须使用较低档位才能安全驾驶。 以下哪项不影响您的档位选择？
(x)Tire tread's depth. 轮胎台面深度

11. Escape ramps: 退出斜坡

Should be used by any driver who looses braking power.
适用于所有失去刹车的车辆

14. Which of these is NOT a danger of a rough acceleration

以下哪一项不是粗暴驾驶引起的危险
(x)Tire damage. 轮胎损坏

15. Which of these lights cannot be checked at the same time?

以下哪些灯不能同时检查
(x)Turn Signal, brake lights and four way flashers.
转向灯，刹车灯和四向闪光灯。

16. You are inspecting hydraulic brakes. You should pump the brake pedal three times then apply firm pressure
to the pedal for five seconds. If the brakes are working properly, the pedal should:
您正在检查液压制动器。 您应该踩下制动踏板三次，然后对踏板施加稳固的压力五秒钟。 如果制动器工作正常，踏板应
该：
(x)Not move.
不动

17. Drivers of trucks and tractors-trailers with cargo must check that the cargo is well secured within the first
_____ miles of the trip.
拖头和装有货物的拖车的驾驶员，应当在出发后____英里内检查货物是否牢固。
(x)25

18. When starting a bus on a level surface with good traction there is often no need for:
在具有良好牵引力的水平表面上启动客车时，通常不需要：
(x)Parking brakes.
驻车制动器

19. How the weight of the vehicle affects stopping distance?

车辆的重量如何影响停车距离？
(x)Empty trucks takes longer to stop than if loaded, but this is not the case for normal buses.
（x）空载卡车停靠的距离比有负载时长，但普通客车的情况并非如此。
21 What is a true about using a heater?
关于使用加热器正确的是？
(x)When driving at winter weather, you should check that the heater is working properly before starting your
trip.
. 在冬天驾驶时，您应该在开始旅行前检查加热器是否正常工作。

23. Which of these is NOT a danger when an automatic transmission is forced into a low gear at a high speed?
当自动变速器被迫在高速度进入低速档时，不会发生哪一项所说的危险？
(x 失去发动机制动效果.

24. Perception distance is the distance your vehicle travel from the time:
感知距离会是您的车辆行驶距离的距离的一部分：
(x)The eyes see a hazard to the time the brain knows that this is a hazard.
当眼睛看到危险,到大脑知道这是一种危险之间的时间,所转化为路上的行驶距离。

25. Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:
商用车需要特别小心，以保持车辆在车道中居中：
(x)Are often wider than other vehicles.
通常比其他车辆更宽。

26. You should lightly apply your brakes to flash the brake lights if:
如果出现以下情况，您应该轻轻地刹车以使刹车灯开始闪烁：
(x)You are about to exit the road and need to slow down.
你即将离开这条路，需要放慢速度。

27. Merging to the road is safest if you:

对你来说，如果安全的并道
(x)Wait for a large enough gap in the traffic to enter the road.
等待车流中有足够大的间隙可以进入道路。

31. Which of these is correct about emergency or evasive action?

哪一项是正确的,关于紧急情况或规避行为？
(x)In order to turn you must have a firm grip on the steering wheel.
为了确保转弯，你必须牢牢抓住方向盘。

33. When driving in cold weather your tire tread should:

在寒冷天气驾驶时，您的轮胎胎面应该：
(x)Provide enough touch into steer and push the vehicle through snow.
提供足够的抓地力并使车辆通过雪地。

34. Which of these is true about hauling if hazardous materials?

关于运输危险物质，哪一项是正确的？
(x)Such a load should be marked with a four inches diamond shaped labels.
确认这样的负载应标有四英寸菱形标签。

35. Which vehicle will have the most difficulties staying in its lane during strong wind?
强风期间，哪种车最难停留在车道上？
(x)A double with an empty trailer.
带空拖车的双车

36. Why your vehicle speed naturally increases on a downgrade?

在下坡上,为什么你的车速会自然增加？
(x)Gravity.
重力

37. During the vehicle inspection checking of _____will NOT prevent a fire?
在车辆检查期间____检查不能防止火灾？
(x)Battery fluid level.
电池液位。

38. When it is necessary to learn how a fire extinguisher works?

什么时候需要了解灭火器的工作原理？
(x)Before the fire happens.
在火灾发生之前。

44. . Which of these actions are NOT recommended for a left turn?
左转不建议使用以下哪些操作？
(x)Start at the inside lane and swing right as you turn.
从内侧车道开始，随着转弯向右侧占道。

47. Which of these is the proper signal to change lane?

哪一个是改变车道的正确信号？
(x)Signal early and change lane slowly and smoothly.
（x）提前发出信号并缓慢平稳地改变车道

50. What should be true about other drivers?

关于其他驾驶员的说法正确的是？
(x)Short term or daily rental truck drivers are often not used to the limited vision and pose the hazard.
x）短途或日租卡车驾驶员往往不习惯有限的视野并造成危险。

52. Which of these statements about hazard of vehicle fire is true?

关于车辆火灾危险的哪些陈述是正确的？
（x）Poor cargo ventilation may cause cargo to catch fire.
货物通风不良可能导致货物着火。

53. You should wear a seat belt in a moving vehicle:

你应该在移动的车辆上系安全带：
(x)All the time. 所有时间

55. Which of the statement about pre trip inspection is true?

关于行程前检查的哪一项陈述是正确的？
(x)If you need to tilt a cab, secure loose things so that they could fail or break anything.
（x）如果您需要倾斜驾驶室，请保护松动的物品，以免它们发生故障或损坏任何物体。

56. Can state inspector inspect your truck or bus?

州检查员可以检查您的卡车或客车吗？
(x)Yes and they can put you out of service if unsafe.
（x）是的，如果不安全，他们会让你停止服务。

57. Which of these statements about cargo loading is true?

关于货物装载的哪些陈述是正确的？
(x)A state law dictates legal weight limit.
州法律规定了法定重量限制。

59. To determine blood alcohol concentration level for a person it is necessary to know:
需要测算血液酒精含量的时候必须知道哪项数据？
(x)How much a person weights.
被测者的体重

62. You are driving a 40ft vehicle at 55 mph. The road is dry and visibility is good. What is a least amount of
space that you need to have in front of your vehicle?
你以 55 英里/小时的速度驾驶 40 英尺的车辆。 道路干燥，能见度很好。 您需要在车辆前面拥有最少的空间
(x)5 seconds 5 秒

65.. Which of these is true about driving in a tunnel?

关于在隧道中驾驶，其中哪一项是正确的？
(x)There maybe strong winds when exiting.
开出来的时候可能遇到强风。

66. You should use your horn when?

什么时候你应该使用喇叭？
(x)If it helps to avoid a crash.
如果能避免碰撞

68. Your vehicle will be put out of service if _____ or more leaves in any leaf spring are missing.
如果缺少任何弹簧片中的_____或更多页片，您的车辆将停止使用。
(x)1/4

69.Break drums or discs must not have cracks longer than_____ the width of the friction area.
刹车鼓或刹车碟盘的裂缝长度不得超过摩擦区域的宽度的____。
(x)One- half (1/2)

70. A hazard:
危险情况
(x)A hazard is any road condition or other road user that is possible danger.
危险情况指的是任何可能存在危险的道路状况或其他道路使用者发生的危险情况。

71. You are driving a heavy vehicle. You must exit a highway using an off ramp that curves downhill. You
should:
你驾驶的是重型车辆。 您必须使用弯道下坡的坡道离开高速公路。 你应该：
(x)Slow down to 5 mph below the posted limit.
减速至低于标称时速限制 5 英里/小时。

72. Which of these rig have more chances to off track while making turn?
以下这些情况中的哪一个在转弯时有更多机会偏离车道？
(x)Triple with 45ft trailer.
三轮的 45 英尺拖车。

73. How much space in front of you is needed while driving on a highway.
在高速公路上行驶时，需要在前方预留多少空间?
(x)1 second for each 10 of vehicle length.
车长每 10 英尺 ，需要 1 秒的行驶距离

75.Which of these you should NOT do in emergency situation?

在紧急情况下你不应该做什么？
(x)You should avoid using the brakes until your speed is down to 40 mph.
在速度降至 40 英里/小时之前，应避免使用制动器。

76. The primary cause of fatal crash is:

致命事故的主要原因是：
(x)Driving too fast. 开的太快

79. If your brakes fail on a downgrade, you must first:

如果你的制动器在下坡时失效，你必须先：
(x)Look outside your vehicle for another means of slowing you
（x）在车外寻找另一种减慢你速度的方法

80. You should always turn on your emergency four way flashers when you:
什么情况下，你应该一直保持你的四向应急闪灯打开？
(x)Park on the side of the road.
停在路边的时候

81. Should brake adjustment be checked often?

应该经常检查制动器是否校准？
(x)Yes, because can get out of adjustment when they are used a lot.
是的，因为当它们被大量使用时可能会失去准确性。

82. Which of these is true about mirror adjustment?

以下哪项关于后视镜调整的说法是正确的？
(x)You should adjust your mirror before starting the trip.
在旅行前就应该调整好后视镜

83. When you are driving on a snow parked road, you should reduce your speed by:
当你行进在积雪覆盖路段，你应该降低你的速度到__。
(x)One- half (1/2)

84. The bridge formula:桥梁承载要求

(x)Permits less maximum axle weight for the axle that close together.
相邻的轴的重量加起来小于限制轴重.

85. Which of these is true about hours of service?

关于工作时间强度的正确的说法：
(x)You should allow enough hours to rest.
你应该保证足够的休息时间

86. Which of these is true about drug use while driving?

关于在驾驶时服药的说法正确的是？
(x)Prescription drugs are allowed if a doctor says they will not affect driving ability.
如果医生说他们不会影响驾驶能力，则允许使用处方药。

87. Which of these is true about proper use of a steering wheel?

以下说法关于恰当的使用方向盘，正确的是？
(x)If you do not hold a wheel with both hands it could pull away from you.
如果你没有用双手握住方向盘，它可能会从你手中脱离。

89.To avoid an accident you moved to the shoulder. To return to the road:
为了避免意外，你行驶到了路肩上。 在准备回到路上：
(x)Using mirrors and turn signals to get back to the road.
使用倒车镜和转向信号灯，回到路上

90. Which of these will not help if windshield is covered with ice?
如果挡风玻璃上覆盖着冰，哪一项没有帮助？
(x)Brush
雨刷刷动

91. Heavy vehicles often move slower than others. Which of these is NOT a good rule to follow while driving
one?
重车通常会慢于其他车辆，哪一项会对后边的车辆产生不良影响？
(x)Signaling other drivers when it's safe to pass you.
当其他驾驶员能安全的超越你的时候向他发出信号。

92. Why tourist may be a hazard?

为什么旅游的车辆可能会引发危险
(x)They may move slowly, unexpectedly change lanes or stop.
他们可能会缓慢移动，意外地改变车道或停车。

93. What keeps an engine cool in a hot weather while driving?

在热天行驶，怎样保持发动机冷却？
(x)Enough engine oil level.
有足够的发动机机油

94.Cargo inspection: 货物检查

(x)Should be performed after every break you take while driving.
应该在每次停车后,再次行驶前进行。

95. Vehicle is loaded with very little weight on the drive axle. What may happen?
车辆在驱动轴上承载了很小的重量。 可能会发生什么？
(x)Poor traction.
牵引力差
96. if your vehicle catches fire you are while driving, you should:
如果在行驶途中车辆着火了，你应该
(x)Park in an open area.
停在开放区域

97. Turn Signals should be used:

什么时候应该使用转向信号
(x)At least 100ft before turning or changing lane.
在转向或者变道的 100 英尺之前。

99. When driving a commercial vehicle with a height over 13ft, you should:
当车辆的高度超过 13 英尺，应该怎么做？
(x)Stop and make sure that a clearance is high enough.
停下，确认需要的高度是否足够

100. When should you test your parking brakes?

什么时候应该测试你的驻车制动器
(x)While the vehicle is parked.
在车辆停着的时候

101. When going down a long steep downgrade you should always:
当你准备进入长下坡的时候应该
(x)Use the braking effect of the engine.
使用发动机来制动

102. Control braking is:可控制制动 是：

(x)Pressing brakes until wheel lock-up occurs ,releasing and then reapplying.
踩下刹车，直到轮子锁死，然后松开刹车，再次重复

103. Which of these is not a brake check you normally do during your walk around inspection?
在您进行步行环车检查时，其中哪一项不是刹车检查？
(x)Brake adjustment.
刹车校准

107. When approaching a bridge on a two lane road you should'

当您驶进有双车道的桥梁时，您应该
(x)Check the weight limit of the bridge.
检查桥梁限重

108. Which of the statement is true?

哪一项说法是正确的？
(x)Many heavy vehicles accidents occur between midnight and 6 am.
许多重型车辆事故发生在午夜至早上 6 点之间。

111. Which of the statement about an inspection of the suspension components is true?
关于悬架部件检查的哪一项陈述是正确的？
(x)Axles' mounts should be checked at each point they are secured on the vehicle frame and axels.
应该检查车轴安装座的每个点。确保他们是牢固的安装在车架和车轴上。
114. If you are convicted of driving a commercial vehicle under influence of alcohol or drug you will loose your
cdl for:
如果您因酒精或药物的影响而驾驶商用车辆而被定罪，您将失去您的 cdl
(x)1 yr. 1 年

115. Which of these is true about hazardous materials:

关于危险品哪项是正确的
(x)All hazardous materials presents health and safety danger.
所有危险品都存在健康和安全危险

116. You will be placed out of service for 24hrs if your blood alcohol concentration is at least:
如果您的血液酒精浓度至少为以下，您将被要求停止服务 24 小时：
(x)Any detectable amount. 任意浓度

121. Whenever you double your speed your vehicle has about how many times of destructive power if it
crashes?
速度提高一倍后，如果发生撞击，会产生几倍的撞击力？
(x)4

125. Which of these should be tested on the vehicle to stop?

哪一项测试应该让车停住？
(x)Service brake.
行车制动器。

126.Which of these about alcohol is not true.

以下关于酒精不正确的是？
(x)Drinker can control how fast the his body absorbs alcohol he gets.
饮酒者可以控制他的身体吸收酒精的速度。

127. Over weight, over sized loads 超重、超限装载

(x)Require special permits
需要特殊许可

128. Which of the statement about braking is true?

以下哪项是关于刹车正确的说法？
(x)The heavy vehicle is or the faster it's moving, the more heat the brakes have to absorb to stop.
重型车辆或者行驶的更快的车辆，为了停下，制动器将吸收更多的热量。

130. In a mountain driving you should go slow for safety. Which of these is most important?
在山路驾驶，为了安全你应该开的慢点，哪一项是非常重要的？
(x)Weight of the vehicle.
车的重量

132. Which of the statement is true about rear drive wheels braking skid?
关于后驱动轮打滑，哪一项是正确的。
(x)On a vehicle with a trailer the trailer can push the towing vehicle sideways.
在带拖车的车辆上，拖车可以将牵引车侧向推动。
133. The best drivers are who watch and prepare for hazard. This is called the ____ driving:
最好的司机是观察和提前准备应对危险。 这称为____驾驶：
(x)Defensive
预防性

135. You may hang up on a railroad track if

你有可能会被铁轨刮住。
(x)The tracks have a steep approach.
铁轨部分是凸起的

137. What kind of optional equipment (except tire wrench) could be in your vehicle?
您的车辆可以使用哪种可选设备（轮胎扳手除外）？
(x)Battery charger.
充电器。

138. Which of these do not provide extra gears on some trucks.

哪一个不能在有些卡车上提供额外档位
(x)Automatic transmission 自动变速箱

139. Which of these is true about tire pressure?

关于胎压哪一项正确
(x)Air pressure in tires increases with the temperature.
轮胎内气压会随着温度升高而增长

140. What should you do if you are unsure whether you have enough overhead clearance?
如果你不能确定有足够的通过高度，应该怎么办？
(x)Find another route that will not require driving under the object.
找另一条上面没有遮挡物的路绕路

143.You drive through the heavy rain or snow. You can hardly see what is going on outside. You can let the
other drivers know about you by?
你开车穿过大雨或下雪，视线很差，怎样才可以让其他驾驶员感知到你？
(x)Turning on the lower beams headlights.
打开近光灯

144.Name two situations where legal maximum weights may not be safe.
说明法定最大重量可能不安全的两种情况。
Bad weather or in mountains
天气不好或在山区

145. Which of these is correct regarding brake shoes?

关于刹车片，哪一个是正确的？
Brake shoes should not be worn dangerously thin.
制动蹄片不应该被磨薄到会带来危险的程度。

146. Which of these is a danger of crossing railroad tracks on dirt roads?

哪些是在土路上穿越铁轨的危险？
a. The ground underneath the tracks may not be stable.
b you could get hung up halfway across the tracks.
你可以在中途被刮住底盘。
c. Your tires could sink into the dirt and not cross the tracks

147. Cargo that can shift should have at least-------------tie down

货物至少应该有几个紧固点
2 tie downs

148. what three things related to cargo are drivers responsible?

与货物有关的哪三件事是司机责任？
Inspecting your cargo, Recognizing overloads and properly secured the cargo .
检查您的货物，识别过载并妥善保管货物。

149. the splash guards or mud flaps must not be

防溅罩或挡泥板一定不能
more than 8-10 inches from the ground 离地面超过 8-10 英寸

150. When you check the condition of visible parts during your pre-trip inspection, make sure that the
__________ are secured against snagging, rubbing or wearing.
当您在行程前检查期间检查可见部件的状况时，请确保__________能够防止钩住，摩擦或磨损
Airlines and electrical wiring.
空气管路和电线。

151. What is the definition of " sleep debt"?“睡眠债务”的定义是什么？

1) The cumulative effect of not getting enough sleep.
2) The money you owe hotels after resting there.
3) The amount of sleep you get each day.
The cumulative effect of not getting enough sleep.
睡眠不足的累积效应。

152. How do you calculate how many seconds of following distance space you have?
你如何计算你有多少秒的距离空间？
1) Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the
same spot.
2) Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the
same spot, then multiply your figure by 2.
3) Divide your speed by four and add one second for every ten feet of trailer you are hauling.
Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the
same spot.
等到你前方的车辆通过一个清晰的地标，然后计算秒数，直到你到达同一地点。

153.stab braking 刺伤制动

Involves releasing the brakes only after the wheels lock up
只有在车轮锁定后才松开制动器

154. Why are placards used?

为什么要使用标牌？
Communicate the risk.
传达风险。

155. which of the following should you not do in the event of hydraulic brake failure?
如果液压制动器出现故障，您不应该执行以下哪项操作
shift up
进挡

156. what items should be checked for safety on the steering column?
为了安全，应该检查转向柱上哪些项目？
steering arms should not be missing any nuts,bolts, or cotter keys.
转向臂不应缺少任何螺母，螺栓或开口键。

157. how does the height of the vehicle's center of gravity affect safe handling?
车辆重心的高度如何影响行驶安全？
trucks with a high center of gravity can roll over at the posted speed limit for a curve.
高重心的卡车按照限速行驶在弯道，会翻车。

158. Controlled braking：

控制制动：
is used to keep a vehicle in a straight line when braking
用于在制动时使车辆保持直线

159. which of these should you not do during a drive wheel skid?
在驱动轮打滑期间你不应该做哪些？
steer into the skid
转向打滑

160. you should back and toward the driver's side?

倒车应该在驾驶员一侧
So yo can watch the rear of the vehicle by looking out the side window.
因此，您可以通过侧窗观察车辆的后部。

161. what is your most valuable way to see the sides and rear while driving？
在驾驶时看到侧面和后部最实际的方式是什么？
check your mirrors regularly
定期检查你的后视镜