纽约州，加州以及其它州商业车驾照拖挂组合理论模拟题复习
驾驶拖挂组合车辆可以成为您商业驾驶生涯中不可或缺的一部分。 不过，在达到这一点之前，您需要通过美国DMV的考试，证明您已经掌握了安全驾驶这些车辆所需的专业知识。 以下30个问题来自官方2025年美国商业车驾照手册，仅涵盖拖挂组合车辆，以帮助您准备此特定的DMV测试。 祝你在练习考试和真正考试的时候好运！
拖挂组合理论模拟考试排行榜
coouler
等分：105
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ysan
等分：105
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jumi0929
等分：100
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240333367
等分：100
用时：1分钟40秒
ab13579
等分：100
用时：1分钟51秒
hello123
等分：100
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sam987654321
等分：100
用时：1分钟57秒
gcf1992
等分：100
用时：2分钟00秒
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
- The trailer will not swivel on the fifth wheel.
- The parking lock is off and you may drive away
- The coupling is not right and should be fixed before driving the coupled unit - 正确答案
- All these answers are true
如果当卡车车头连接到拖斗后，车头的牵引座锁定杆未关闭，这意味着车头连接拖斗不正确，切勿在此情况未解决前上路。
You are coupling a tractor to a semi-trailer and have backed up but are not under it. What should you hook up before backing under?
- None of these answers are correct
- The electrical service cable
- The emergency and service air lines. - 正确答案
- Nothing, Back up and lock the fifth wheel
当你要将车头连接到半挂拖斗，你应该先连接好紧急刹车管线和服务刹车管线，然后再倒到拖斗下方
When you get ready to back under semitrailer you should line up:
- Directly in front of the trailer - 正确答案
- None of these answer are correct
- The kingpin to engage the driver's side locking jaw first
- The left rear outer dual wheel with the kingpin
当你准备好将车头倒车连接半挂车时，你应该尽量将车头与挂车直线对其
What will happen if the air lines are crossed when you hook up to an old trailer
- none of these answers are correct
- The brake lights will come on when the brake pedal is pressed
- If the trailer has no spring brakes, you could drive away but you wouldn't have trailer brakes - 正确答案
- The hand valve will apply the tractor brakes instead of the trailer brakes
连接旧的拖斗时，如果服务刹车气管与拖斗刹车气管弄混了。 如果拖斗没有弹簧刹车器，你可以开车离开，但拖斗将没有刹车
The semitrailer made before 1975 that are equipped with the air brakes:
- Often do not have spring brakes - 正确答案
- Have only a service air line
- Usually need a glad hand converter
- Have only a emergency air line
1975年之前生产的装有气刹的半挂车通常没有弹簧刹车系统
