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2026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
The air lines on a combination of vehicles are often colored to prevent them from mixing up. The emergency line is ___, the service line is ___
- Brown, Red
- Black, Yellow
- Red, Blue - 正确答案
- Green, Blue
组合车辆上的刹车管路通常带有颜色,以防止它们混淆。 紧急刹车管路是红色的,服务刹车管路是蓝色的。
The hand valve should be used:
- None of these answer are correct
- only with a foot brake
- as a parking brake
- to test the trailer brakes - 正确答案
手动阀门只可以用于测试拖斗的刹车,不可以用于泊车停车
After the trailer has been coupled to the tractor. the tractor protection control valve should be placed in what position?
- Down
- Up
- Normal - 正确答案
- Left
将卡车车头连接到卡车拖车之后。 卡车车头的保护控制阀应置于正常位置。
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible, and (2):
- Keep both hands firmly on the steering wheel
- Make sure that the brakes are properly adjusted
- none of these answers are correct
- Go slow around turns - 正确答案
驾驶员可以做两件事来防止拖斗在行驶途中翻了。 它们是:(1)保持货物尽可能靠近地面,(2)转弯时要慢一些
You have a major leak in the service line and you put on the brakes. Service air will escape and cause the:
- Tractor spring brake to lock up
- None of these answer are correct
- Trailer emergency brakes to come on - 正确答案
- Trailer tank pressure to be lost
当你踩刹车时,卡车的服务刹车系统出现严重的漏气,这时服务刹车系统的气将逸出并导致挂车的紧急刹车系统开启 ( 紧急刹车按钮会弹出 )


