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
After the trailer has been coupled to the tractor. the tractor protection control valve should be placed in what position?
- Up
- Down
- Left
- Normal - 正确答案
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。
After you supply air to the trailer. make sure the air lines are not crossed and the trailer brakes are working. This is done by:
- Applying and releasing the trailer brakes and listening for the sound of the brake - 正确答案
- Watching your mirrors to see if the trailer lights come on
- None of these answers are correct
- Lifting the brake pedal
向拖斗供气后,为确保服务刹车管和拖斗刹车管没有弄混了,且拖车刹车正在工作,可以通过踩放刹车然后听拖斗刹车的声音。
When driving a set of doubles. it is necessary to close which shut-off valve in the last trailer
- Middle section
- None of these answer are correct
- Front
- Back - 正确答案
当你要驾驶一辆拉着双拖斗的卡车,在行驶前,必须确定关闭最后一个拖斗中的后向截止阀。
You have coupled with a semitrailer. Where should you put the iron trailer supports before driving away
- Raised 1/2 way with the crank handle secured in its bracket
- Fully raised with the crank handle secured in its bracket - 正确答案
- 3 turns off the top with the crank handle secured in its bracket
- Raised 1/4 way with the crank handle secured in its bracket
当车头已经与拖斗连接上,准备开车离开之前,应完全的将拖车支架收起,并将曲柄固定在支架上的收放处。
Why should you lock the tractor glad hands to each other ( or dummy couplers ) when you are not towing a trailer
- They will be leaking air
- Tractor's emergency brake control knob will come on
- It will keep dirt and water out of the lines - 正确答案
- The connected brake circuit becomes a back up air tank
不拖曳拖斗时,应将卡车后方的刹车气管相互锁定(或锁定在虚拟耦合器上), 以防止污垢或水进入刹车气管中。


