通用知识测试 – 卡友助手

通用知识测试

题库共有484题，每次随机刷新50题，正确率80%以上即为通过。

Updated: Jan 02 2026

正确！说明：制动衬片（制动片上的摩擦材料）不得松动、不得被油脂浸湿，且不得磨损到危险薄度。机械部件应齐全完好、无破损或缺失；板簧不得缺片、移位、开裂或折断。 / Correct! EXPLANATION: Linings, or the friction material on brake pads, must not be loose or soaked with oil or grease and must not be dangerously thin. Mechanical parts must be in place, not broken or missing. Leaf springs should not have missing, shifted, cracked, or broken leaf.

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你在进行出车前检查，正在检查制动与悬挂系统。以下哪项说法正确？ / You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true?

制动蹄片不得磨损到危险薄度 / Brake shoes should not be worn dangerously thin

以上答案都正确 / All answers are correct and true

制动片上不应有制动液（油） / Brake pads should not have brake fluid on them

板簧缺少任意一片都会很危险 / One missing leaf in a leaf spring can be dangerous

完全正确！解释：有些液罐由隔板分成多个小舱。装卸时要注意各舱重量分配。 / Exactly! EXPLANATION: Some liquid tanks are divided into several smaller tanks by bulkheads. When loading and unloading the smaller tanks, the driver must pay attention to weight distribution.

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有些液罐被分成若干个小罐，这种分隔结构称为： / Some liquid tanks are divided into several smaller tanks by:

挡板（防浪板） / Baffles

隔板（纵向隔舱） / Bulkheads

容器 / Containers

完全正确！说明：当系统无法建立压力时，你可以：降挡、泵压刹车、使用驻车制动，并寻找脱险路线。 / Exactly! EXPLANATION: When the system won't build up pressure here are some things you can do: downshift, pump the Brakes, use the parking brake, and find an Escape Route.

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液压刹车失效时，下列哪一项不应该做？ / Which of the following should you NOT do in the event of hydraulic brake failure?

使用驻车/紧急制动。 / Use the parking or emergency brake.

升挡。 / Shift up.

反复踩踏刹车（泵压刹车）。 / Pump the brakes.

正确！说明：随着 BAC 升高，酒精会影响大脑更多区域；首先受影响的是掌管判断与自控的部分。 / Correct! EXPLANATION: Alcohol affects more and more of the brain as BAC builds up. The first part of the brain affected controls judgment and self-control.

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当你的血液酒精浓度（BAC）升高时，会发生什么？ / As your blood alcohol concentration (BAC) rises, what happens?

你会更清楚地意识到酒精对你的影响。 / You see more clearly how alcohol is affecting you.

判断力与自控力会受到影响。 / Judgment and self-control are affected.

你会更快清醒。 / You can sober up in less time.

答对！解释：要随时准备进行“反向转向”（回打方向）：为躲避危险先向一侧转向后，立即朝相反方向回正修正。把转向与回打视作同一驾驶动作的两个步骤。 / Bingo! EXPLANATION: Be prepared to "counter-steer," that is, to turn the wheel back in the other direction, once you've passed whatever was in your path. You should think of emergency steering and counter-steering as two parts of one driving action.

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什么是反向转向（回打方向）？ / What is counter steering?

使用转向轴制动来防止过度转向 / Using the steering axle brakes to prevent over steering

朝与其他驾驶员预期相反的方向转向 / Steering in the opposite direction from what other drivers expect you to do

将方向盘向逆时针方向转动 / Turning the steering wheel counter clockwise

为避免紧急情况，在初次转向后立即向相反方向回打方向盘 / Turning the wheel in the opposite direction after steering to avoid a traffic emergency

答对！解释：在压实的积雪上应将车速降低至少一半；若路面结冰，降速至爬行，并在确保安全时尽快停止行驶。 / Bingo! EXPLANATION: On packed snow, reduce speed by a half, or more. If the surface is icy, reduce speed to a crawl and stop driving as soon as you can safely do so.

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在冰雪路面上，你应将车速降低： / In snow and ice, you should reduce your speed by?

1/4 / 1/4

1/3 / 1/3

1/2（减半） / 1/2

正确！解释：许多通用面向小客车，卡车需要支持大车限高限重、路线规避等功能，应选择专为商用车辆设计的机型。 / Right! EXPLANATION: Most GPS devices are made for cars or other smaller vehicles, and so not have the size or weight of large vehicles programmed in. Make sure your GPS device is designed for large commercial vehicles.

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导航设备（）应当： / A GPS device

应为美国制造。 / should be made in the USA.

屏幕应大于 4 英寸。 / should have a screen larger than 4 inches.

应为卡车导航专用机型。 / should be designed for truck navigation.

正确！解释：驾驶员座位应配备安全带，并应始终系好以确保安全。 / Right! EXPLANATION: Use Your Seatbelt! The driver's seat should have a seat belt. Always use it for safety.

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何时应系好安全带？ / When should you wear seat belts?

仅在法律要求的州才系 / Only in states where it is required by law

车辆行驶时任何时候都要系 / Any time you are in a moving vehicle

只在高速公路上行驶时才系 / Only when traveling on a highway

完全正确！解释：车辆必须配备紧急设备：灭火器、备用保险丝（若配有断路器可例外）以及用于停车时的警示装置。 / Exactly! EXPLANATION: Vehicles must be equipped with emergency equipment. Look for: fire extinguisher(s), spare electrical fuses (unless equipped with circuit breakers), and warning devices for parked vehicles.

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你的紧急装备包【不需要】包括： / Your emergency kit does NOT need to include

灭火器。 / a fire extinguisher.

警示装置。 / warning devices.

备用夹克。 / a spare jacket.

备用保险丝。 / spare electrical fuses.

正确！解释：避险车道旨在让失控或制动失效的车辆安全停下，避免伤及驾乘人员。 / Right! EXPLANATION: Escape ramps are made to stop runaway vehicles safely without injuring drivers and passengers.

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卡车紧急避险车道（逃生坡道）： / Truck escape ramps:

只有在下坡刹车失效、尝尽其他办法后才可使用 / Should not be used unless you have first tried all other ways to save your vehicle after brake failure on a downgrade

某些重型车辆不能使用 / Cannot be used by certain types of heavy vehicles

旨在保护车辆、人员免受更大损害 / Are designed to protect vehicles from damage

答对！说明：多速后桥和副变速器可为许多车辆提供额外挡位，通常通过主变速杆上的选择旋钮或开关控制。 / Bingo! EXPLANATION: Multi-speed rear axles and auxiliary transmissions are used on many vehicles to provide extra gears. You usually control them by a selector knob or switch on the gearshift lever of the main transmission.

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以下哪些装置会在某些卡车上提供额外的挡位？ / Which of the following provide extra gears on some trucks?

以上两者皆是 / Both of the above

多速后桥 / Multi-speed rear axles

副变速器 / Auxiliary transmissions

答对！说明：有人突然加塞时，应变道或减速避免碰撞；不要按喇叭并紧跟其后。 / Bingo! EXPLANATION: What you should do is make a lane change or slow down to prevent a crash if the car suddenly cuts in front of you, and you should not honk or stay close behind the car.

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一辆小汽车突然插到你前方，造成危险。你【不应该】做什么？ / A car suddenly cuts in front of you, creating a hazard. What should you NOT do?

打灯并尽可能变道避让该车。 / Signal and change lanes to avoid the car if possible.

减速以避免碰撞。 / Slow down to prevent a crash.

按喇叭并紧跟在该车后面。 / Honk and stay close behind the car.

正确！解释：货物每 10 英尺至少需要 1 条捆扎；务必确保数量足够。因此 20 英尺的货物至少需要 2 条。 / Correct! EXPLANATION: Cargo should have at least one tie-down for each ten feet of cargo. Make sure you have enough tiedowns to meet this need. For a 20-foot load you would need at least 2 tie downs.

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一件 20 英尺长的货物至少需要多少条捆扎？ / How many tie-downs are required for a 20-foot load?

4 条 / 4

1 条 / 1

3 条 / 3

2 条 / 2

答对！解释：短租或日租卡车司机往往不习惯大车的盲区与有限视野，存在安全隐患；不要完全信任对方的转向灯。 / Bingo! EXPLANATION: Be alert for drivers whose vision is blocked. Vans loaded station wagons, and cars with the rear window blocked are examples. Rental trucks should be watched carefully. Their drivers are often not used to the limited vision they have to the sides and rear of the truck.

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关于其他驾驶者，以下哪项说法正确？ / Which of these statements is true about other drivers?

邮政或送货卡车司机不存在安全隐患。 / Mail or delivery truck drivers do not pose a hazard.

只要对方打了转向灯，就一定会按指示方向转弯。 / Drivers using turn signals can be trusted to turn in the direction they indicate.

短租或日租卡车司机往往不适应有限视野，具有安全隐患。 / Short-term or daily rental truck drivers are often not used to the limited vision and pose a hazard.

正确！解释：胎压不足以及并装双胎互相接触，是轮胎起火的最常见原因。 / Correct! EXPLANATION: Under-inflated tires and duals that touch are the most common causes of tire fires.

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轮胎起火的常见原因是什么？ / What is a common cause of tire fires?

温度过低的轮胎 / Cold tires

胎压过高的轮胎 / Overinflated tires

以上皆是 / All of the above

胎压不足的轮胎 / Underinflated tires

正确！解释：人体代谢酒精需要时间，只有时间能让人逐渐清醒；黑咖啡、冷水或冷风都不能加速清醒。 / Correct! EXPLANATION: The liver can only process one-third an ounce of alcohol per hour, which is considerably less than the alcohol in a standard drink. This is a fixed rate, so only time, not black coffee or a cold shower, will sober you up.

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让醉酒的人清醒过来的方法是？ / What will help someone who is drunk sober up?

新鲜空气 / Fresh air

一杯水 / A glass of water

咖啡 / Coffee

时间 / Time

完全正确！解释：应核对运输单据、识别编号、**标签**和车辆的警示牌（）；查看容器标签即可识别是否为危险品。 / Exactly! EXPLANATION: Emergency personnel look for these things on the shipping paper. That is why it is vital that the proper shipping name, identification number, label, and placards are correct.

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识别危险品可以查看容器的： / One can recognize hazardous materials by looking at the container's

标签。 / label.

形状。 / shape.

颜色。 / color.

答对！说明：由加速引起的侧滑通常发生在冰雪路面。松开油门即可很快制止。如果非常湿滑，可踩下离合器；否则发动机可能让车轮不能自由滚动而难以恢复附着。 / Bingo! EXPLANATION: Skids caused by acceleration usually happen on ice or snow. Taking your foot off the accelerator can easily stop them. If it is very slippery, push the clutch in. Otherwise, the engine can keep the wheels from rolling freely and regaining traction.

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你从静止起步，给驱动轮加油时，它们开始打滑（空转）。你应该： / You are starting your vehicle in motion from a stop, as you apply power to the drive wheels they start to spin. You should:

松开油门踏板 / Take your foot off the accelerator

松开油门并踩下刹车 / Take your foot off the accelerator and apply the brakes

尝试更低的挡位 / Try a lower gear

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下列哪些车灯无法同时做检查？ / Which lights cannot be checked at the same time?

示宽灯和尾灯 Marker lights and tail lights

转向灯、刹车灯和四方向闪光灯 Turn signals, brake lights, and four-way flashers

近光灯和远光灯 Low beams and high beams

正确！解释：悬挂肉类属于高重心且极不稳定的载荷，驶入/驶出匝道等急弯时尤需谨慎；牲畜会在挂车内移动并在弯道时倾斜，造成操控不稳，需要特别小心。 / Correct! EXPLANATION: Hanging meat can be a very unstable load with a high center of gravity, particular caution is needed on sharp curves such as off ramps and on ramps. Livestock can move around in a trailer, causing unsafe handling, and special care is necessary because livestock can lean on curves.

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关于某些类型货物，下列说法哪项正确？ / Which of these statements about certain types of cargo is true?

超大件货物可在道路不繁忙时无需特别许可运输 / Oversize loads can be hauled without special permits during times when the roads are not busy

不稳定载荷（如悬挂肉类或牲畜）在弯道需要格外小心 / Unstable loads such as hanging meat or livestock require extra caution on curves

散装液体通常很重，因此不会造成车辆操控问题 / Loads that consist of liquids in bulk do not present vehicle handling problems because they are usually very heavy

答对！解释：刹车进水会使制动力变弱、作用不均或忽紧忽松；可能出现制动效能不足、单侧抱死、车辆跑偏，牵引挂车时甚至会发生折刀。 / Bingo! EXPLANATION: Water in the brakes can cause the brakes to be weak, to apply unevenly, or to grab. This can cause lack of braking power, wheel lockups, pulling to one side or the other, and jackknife if you pull a trailer.

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雨天刹车进水，可能导致的后果是： / If your brakes get wet on a rainy day, what can result?

制动效能下降 / Reduced braking power

水上滑行（漂移） / Hydroplaning

制动器过度磨损 / Excessive brake wear

完全正确！解释：在道路或路肩上停车后应在十分钟内摆放警示装置（如反光三角牌），以提醒其他道路使用者。 / Exactly! EXPLANATION: If you must stop on a road or the shoulder of any road, you must put out your emergency warning devices within ten minutes.

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如必须在道路或路肩上停车，你必须在多长时间内摆放紧急警示装置？ / If you must stop on a road or the shoulder of any road, you must put out your emergency warning devices within

五分钟。 / five minutes.

十分钟。 / ten minutes.

十五分钟。 / fifteen minutes.

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为了您的安全，当您放置反射三角形时，您应该： / For your safety, when placing reflective triangles, you should:

将三角形的反光面朝向迎面而来的交通 Face the reflective side toward oncoming traffic

把三角形直接放在车后保险杠下面，越近越好 Place triangles directly under the rear bumper as close as possible

将三角形的反光面朝向自己的车辆 Face the reflective side toward your vehicle

答对！说明：朝驾驶员一侧倒车视野更好；朝右侧倒车很危险，因为看不清。朝驾驶员侧倒并转向时，你可以通过侧窗观察车辆后部。 / Bingo! EXPLANATION: Back to the driver's side so that you can see better. Backing toward the right side is very dangerous because you can't see as well. If you back and turn toward the driver's side, you can watch the rear of your vehicle by looking out the side window.

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尽量朝驾驶员一侧倒车，因为 / Always try to back toward the driver's side because

以上说法都对。 / all of the above are true.

你能看得更清楚，可从侧窗观察车辆后部。 / you can see better, watching the vehicle's rear from the side window.

你的卡车可能会自然朝驾驶员一侧偏。 / your truck will probably pull toward the driver's side.

扭脖子更舒服。 / it's more comfortable for turning your neck.

完全正确！解释：许多感冒药会使人犯困或影响反应能力，因此不应在驾驶时服用。 / Exactly! EXPLANATION: This includes a variety of prescription and over-the counter drugs or cold medicines, which may make the driver drowsy or otherwise affect safe driving ability.

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关于治疗普通感冒的药物，以下哪项说法正确？ / Which of these statements is true about medicines used to treat the common cold?

只要只服用一半剂量，就可以一边开车一边服用。 / They can be used while driving as long as you only take half the regular dose.

这类药物常使人犯困，因此不应在驾驶时服用。 / They often make you sleepy. Therefore, they should not be used while driving.

这些药只能在白天驾驶时使用。 / They should only be used when driving during the daytime.

正确！说明：车辆检查的一部分是确保车辆不过载，且货物分布平衡并已正确固定。 / Correct! EXPLANATION: As part of your Vehicle inspection, make sure the truck is not overloaded and the cargo is balanced and secured properly.

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无论是否由你亲自装载并加固货物，你都负有下列责任： / Whether you load and secure your load yourself, you are responsible for:

检查你的货物 / Inspecting your cargo

以上皆正确 / All answers are correct

确认货物已牢固捆扎并覆盖 / Knowing your cargo is securely tied down and covered

识别超载与重量分配不均 / Recognizing overloads and poorly balanced weight

完全正确！说明：为安全起见，应：留意各类仪表是否异常，运用感官排查问题（看、听、闻、必要时触摸），并在每次停车时检查关键项目。 / Exactly! EXPLANATION: For safety you should: watch gauges for signs of trouble, use your senses to check for problems (look, listen, smell, feel), and check critical items when you stop.

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行车途中你应该检查哪些事项？ / What things should you check during a trip?

在本车道内左右小幅摆动以检查载荷是否稳定 / Check load stability by slightly swerving left to right in your lane.

查看地图、导航与天气预报。 / Check your maps and directions and the weather report.

观察各类仪表与后视镜，并运用感官排查问题：看、听、闻。 / Watch gauges and mirrors and use your senses to check for problems: LOOK, LISTEN, and SMELL.

没错！说明：顺应车流速度通常更安全也更省力。 / Right! EXPLANATION: Going with the flow of traffic is safer and easier.

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你的车辆在空旷道路上可安全以 55 英里/小时行驶。现在车流拥堵，虽限速 55，但车流以 35 英里/小时行驶。此时你最安全的车速最可能是： / You are driving a vehicle that could safely be driven at 55 mph on an open road. Traffic is now heavy and moving at 35 mph although the speed limit is 55. The safest speed for your vehicle in this situation is most likely:

35 英里/小时 / 35 mph

40 英里/小时 / 40 mph

30 英里/小时 / 30 mph

正确！解释：前端头板（亦称“防撞架”）可在发生碰撞或紧急制动时保护驾驶员；车辆前端结构应能阻止所载货物向前移动。 / Correct! EXPLANATION: Front-end header boards ("headache racks") protect you from your cargo in case of a crash or emergency stop. The front-end structure should block the forward movement of any cargo you carry.

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前端头板（挡货板）： / Front end header boards:

以上皆非 / No answers are correct

既能在碰撞时保护驾驶员，也能阻止货物前移 / Protect you from your cargo in case of collision and block the forward movement of your cargo

发生碰撞时保护驾驶员不被货物撞击 / Protect you from your cargo in case of collision

阻止货物向前移动 / Block the forward movement of your cargo

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在强风期间，哪辆车最难停留在车道上？ / In strong winds, which vehicle is hardest to keep in its lane?

载客的公共汽车 A passenger bus

空载的双拖车 An empty double trailer

满载的单拖车 A fully loaded single trailer

正确！说明：入弯前先降至安全速度，并预先降到合适挡位。这样弯中可适度带油提升稳定性，也便于出弯后及时加速。 / Correct! EXPLANATION: Slow down to a safe speed, and downshift to the right gear before entering the curve. This lets you use some power through the curve to help the vehicle be more stable while turning. It also allows you to speed up as soon as you are out of the curve.

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关于降挡，下列哪项说法正确？ / Which of these statements about downshifting is true?

为下坡而降挡，应在下坡开始之后再进行 / When you downshift for a hill, you should do so after you start down the hill

为通过弯道而降挡，应在入弯之前完成 / When you downshift for a curve, you should do so before you enter the curve

进行双踩离合时，应在离合松开、变速杆置于空挡时让转速下降 / When double clutching, you should let the RPM's decrease while the clutch is released, and the shift lever is in neutral

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以下关于警告其他司机有车辆停放，哪种说法是对的？ / Which statement about warning other drivers of a parked vehicle is true?

如果驾驶员的视线在500英尺内被遮挡，则将反射三角架往后移动If drivers’ view is obstructed within 500 feet, move the reflective triangles farther back

只要开双闪，就不需要摆放任何三角架If your hazard flashers are on, you never need triangles

视线被遮挡时，把三角架放得更近更好If view is obstructed, place triangles closer to the vehicle

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哪些关于行前检查的陈述是真的？ / Which statement about a pre-trip inspection is true?

只要昨天检查过，今天就可以完全跳过行前检查 If you checked yesterday, you can skip the pre-trip inspection today

如果您需要倾斜车辆，固定好松散物品，避免其移位掉落造成损坏 If you need to tilt the vehicle, secure loose items to prevent shifting/falling and damage

行前检查只要看仪表盘，不需要下车检查 A pre-trip inspection only requires checking the dashboard; no need to get out

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在行驶通过道路施工区时，您应该： / When driving through a work zone, you should:

只要看到工人就鸣笛提醒，不用看路面情况 If you see workers, just honk to warn them; you do not need to watch road conditions

注意路面上的坎或台阶 Watch for bumps or drop-offs in the roadway

为了不被插队，应尽量贴近前车行驶 To avoid being cut off, follow the vehicle ahead as closely as possible

正确！说明：速度已上来后不要再尝试降挡；此时无法挂入低挡，甚至可能挂不上任何挡位，从而完全丧失发动机制动。 / Correct! EXPLANATION: Do not try to downshift after your speed has already built up. You will not be able to shift into a lower gear. You may not even be able to get back into any gear and all engine braking effect will be lost.

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为何在开始下坡前必须先挂入合适挡位？ / Why should you be in the proper gear before starting down a hill?

一旦开始下坡你将无法再挂入低挡。 / You will not be able to shift into a lower gear once you are going down a hill.

你需要在山底仍保持相同挡位。 / You need to be in the same gear at the bottom of the hill.

离合器只是为平整路面而设计使用的。 / The clutch is made to be used on even surfaces.

答对！解释：碰撞高空障碍物很危险；不确定净空高度时必须停车确认，确保上方净空无虞。 / Bingo! EXPLANATION: Hitting overhead objects is a danger. Make sure you always have overhead clearance.

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驾驶高度超过 13 英尺的商用车辆时，你应该： / When driving a commercial vehicle with a height over 13 feet you should:

假定所有净空都足够高 / Assume all clearances are high enough

以上皆是 / All answers are correct

若不确定净空高度，必须停车确认 / If you aren't sure about the clearance, stop and make sure

只要在州或联邦公路上行驶就无需担心净空高度 / Not worry about the clearance if you stay on the state or federal highways

完全正确！说明：掌握车辆两侧与后方的情况很重要。要经常看后视镜；在特殊情况下更要频繁查看。 / Exactly! EXPLANATION: It's important to know what's going on behind and to the sides. Check your mirrors regularly. Check more often in special situations.

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行驶中查看车辆两侧与后方最有效的方法是什么？ / What is your most valuable way to see the sides and rear while driving?

探头从车窗看。 / Look out the window.

经常查看后视镜。 / Check your mirrors regularly.

下车查看周边区域。 / Get out and inspect the areas.

正确！解释：总停车距离=感知距离+反应距离+制动滞后+制动距离；以 55 英里/小时计，至少约 450 英尺。 / Right! EXPLANATION: The total stopping distance is the total minimum distance your vehicle has traveled, in ideal conditions; with everything considered, including perception distance, reaction distance and braking distance, until you can bring your vehicle to a complete stop. At 55 mph, your vehicle will travel a minimum of 450 feet.

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一般来说，配有空气制动的车辆总停车距离大约是多少？ / On average, the total stopping distance with air brakes is?

约 420 英尺 / Approximately 420 feet

约 450 英尺 / Approximately 450 feet

约 400 英尺 / Approximately 400 feet

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在与重型车辆交叉或并入交通时，以下哪项是正确的？ / When crossing or merging with heavy vehicles, which statement is correct?

重型车辆加速很快，所以给它们留更小空隙也没关系 Heavy vehicles accelerate very quickly, so smaller gaps are fine

重型车辆只要打转向灯，其他车辆必须立刻让出车道 If a heavy vehicle signals, other vehicles must immediately give up the lane

重型车辆并入车流时需要比小汽车更大的空隙 Heavy vehicles need a larger gap than cars to merge into traffic

完全正确！解释：首先尽力避免冲突；不要与对方对视或挑衅；在安全情况下报警，并向相关部门报告攻击性驾驶行为。 / Exactly! EXPLANATION: First and foremost, make every attempt to get out of their way. Do not challenge them by speeding up, avoid eye contact, ignore gestures and refuse to react to them, and report aggressive drivers to the appropriate authorities.

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遇到咄咄逼人的“路怒”驾驶者时，你应该： / If you are confronted by an aggressive driver, what should you do?

以上皆是。 / Do all of the above.

避免与其对视。 / Avoid eye contact.

在确保安全的情况下用手机报警。 / Call the police from your cell phone if you can do it safely.

无视对方的粗鲁手势，避免负面回应。 / Ignore rude gestures and refuse to react negatively.

没错！说明：车辆起火的常见原因包括：燃油泄漏、错误使用照明信号火炬（flares）、轮胎气压不足、双胎互相接触、短路与接线松动、加油不当、油路接头松动、易燃货物、封装或装载不当、通风不良等。 / Right! EXPLANATION: The following are some causes of vehicle fires: spilled fuel, improper use of flares, under-inflated tires , duals that touch, short circuits, loose connections, improper fueling, loose fuel connections, flammable cargo, improperly sealed or loaded cargo or with poor ventilation.

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关于车辆起火的原因，下列哪项说法是正确的？ / Which of these statements is true about causes of vehicle fires?

携带状态良好的灭火器有助于预防火灾。 / Carrying a properly charged fire extinguisher will help prevent fires.

轮胎气压不足*不会*导致车辆起火。 / Underinflated tires will NOT cause a vehicle fire.

挂车通风不良可能导致易燃货物起火。 / Poor trailer ventilation can cause flammable cargo to catch fire.

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你驾驶一辆需要大转弯半径的长车。你想从榆树街左转到橡树街。榆树街上有两条左转车道（标有A和B），橡树街是四车道（每个方向两条）。你应该： / You are driving a long vehicle that needs a wide turning radius. You want to turn left from Elm St. onto Oak St. Elm St. has two left-turn lanes (A and B), and Oak St. has four lanes (two each direction). You should:

使用左转车道AUse left-turn lane A

使用左转车道B Use left-turn lane B

先直行到路口中央再突然左转，不必选择车道Go straight into the intersection and then suddenly turn left; lane choice is not necessary

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当驾驶高度超过13英尺的商用车时，你应该： / When driving a commercial vehicle over 13 feet tall, you should:

停车，并确认净空高度是否足够 Stop and make sure the clearance is high enough

只要标牌没写“禁止卡车”，就可以直接通过 If there is no “no trucks” sign, just proceed

加速冲过去，这样更不容易擦到顶部 Speed up to reduce the chance of hitting the top

正确！说明：点放式制动法是将刹车踩到底，当车轮抱死时立即松开。 / Correct! EXPLANATION: With the stab braking method, you apply your brakes all the way and release brakes when wheels lock up.

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点放式制动（Stab braking） / Stab braking

是把刹车踩到底，直到车轮抱死后再松开。 / involves releasing the brakes only after the wheels lock up.

绝不应使用。 / should never be used.

是在不抱死车轮的情况下持续均匀踩刹车。 / involves steady pressure on the brake pedal without locking the wheels.

正确！解释：不要直视强光；把视线移到车道右缘或道路右侧的边线，必要时减速。 / Correct! EXPLANATION: Don't look directly at bright lights when driving. Look at the right side of the road. Watch the sidelines when someone coming toward you has very bright lights on.

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夜间会车时，如果对向车辆一直不开近光（保持远光），你应该怎么做？ / What should you do if a car coming toward you at night keeps its high beams on?

把视线移向本车道右缘或道路右侧边缘。 / Look toward the right edge of your lane or the right edge of the road.

减速并直视前方。 / Slow down and look straight ahead in your lane.

用远光灯向对方闪烁示警。 / Flash your high beams at the other driver.

答对！解释：前轴负载不足会使转向轴负载过轻，转向稳定性不足，影响行车安全。 / Bingo! EXPLANATION: Under-loaded front axles can make the steering axle weight too light to steer safely.

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前轴负载不足可能导致： / Under-loaded front axles can cause the following:

以上皆是 / All answers are correct

轮胎受损 / Damage to the tires

方向盘间隙过大不是问题 / Too much play in the steering wheel is not a problem

附着力差 / Poor traction

正确！解释：血液酒精浓度（BAC）达到或超过 0.04% 时驾驶商用车辆属于违法；驾驶商用车辆即视为同意接受酒精测试。 / Correct! EXPLANATION: It is illegal to operate a CMV if your blood alcohol concentration (BAC) is .04% or more. If you operate a CMV, you shall be deemed to have given your consent to alcohol testing.

47 / 50

商用车驾驶员被视为醉酒（驾驶商用车辆）的血液酒精浓度（BAC）标准是： / The new BAC or blood alcohol concentration for commercial drivers to be considered intoxicated when driving a commercial vehicle is:

.04 / .04

.01 / .01

.10 / .10

正确！说明：请记住，前车比你更小，通常也能更快停住；如果你跟得过近，就可能发生追尾。 / Correct! EXPLANATION: Remember, if the vehicle ahead of you is smaller than yours, it can probably stop faster than you can. You may crash if you are following too closely.

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如果你前方的车辆比你的小，它很可能可以 / If the vehicle in front of you is smaller than yours, it can probably

跑得比你快。 / outrun you.

比你更快地停下来。 / stop faster than you.

比你更快地转弯。 / make turns faster than you.

没错！说明：你应始终确保能在前方可见距离内停住。 / Right! EXPLANATION: You should always be able to stop within the distance you can see ahead.

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关于车速管理，下列哪项说法正确？ / Which of these statements about speed management is true?

空车总是比满载车辆的刹车距离更短 / Empty trucks always stop in a shorter distance than fully loaded ones

车速加倍时，制动距离也只是加倍 / As the speed of a vehicle doubles, its stopping distance also doubles

应选择能在你前方可见距离内停住的速度 / You should choose a speed that lets you stop within the distance that you can see ahead

在弯道中应当一直踩刹车 / You should always brake during curves

完全正确！解释：部分车辆配有观察窗或透明回收罐；只要发动机未过热，可在工作温度时补加冷却液，但切勿打开加压散热器盖。 / Exactly! EXPLANATION: Some vehicles have sight glasses, see-through coolant overflow containers, or coolant recovery containers. These permit you to check the coolant level while the engine is hot. If the container is not part of the pressurized system, the cap can be safely removed, and coolant added even when the engine is at operating temperature.

50 / 50

当发动机处于工作温度时，往冷却液回收罐或膨胀壶加冷却液是否安全？ / Is it safe to add coolant to a coolant recovery tank or coolant overflow tank while the engine is at operating temperature?

可以，只要发动机没有过热。 / Yes, as long as the engine isn't overheated.

可以，但前提是回收罐属于加压系统的一部分。 / Yes, but only if the coolant recovery container is part of the pressurized system.

不，绝对不行。 / No, never.

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