纽约州,加州以及其它州商业车驾照气刹理论模拟题复习

驾驶带有空气制动器的车辆需要获取气刹许可证。 在美国,要获得此认可证,申请人必须通过气刹原理考试。 考试由25道选择题组成。 每个问题有四个答案选择。 要通过,申请人必须正确回答至少20个问题。 大部分测试题来自纽约州商用机动车辆驾驶员手册。空气制动器许可证可与 A、B 或 C级的驾照一起使用。

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Why should you drain water from compressed air tanks?

  1. Water low boiling point reduces braking power
  2. Water cools the compressor too much
  3. Water can freeze in cold weather and cause brake failure. - 正确答案
  4. None of these answers are correct

你应将水从压缩空气罐中排出,因为水在寒冷的天气中会结冰并导致刹车失灵。

The S-cam

  1. Force the brake shoes against the inside of the brake drum - 正确答案
  2. None of these answers are correct
  3. Controls the flow air to each of the brake chambers.
  4. Pulls the brake shoes away from the drum and allow the wheels to roll freely

S凸轮强制将刹车片压向刹车鼓内部,从而起到刹车作用。

To test air service brakes you should:

  1. None of these answers are correct
  2. Stop the vehicle, brake in a low gear, depress the service brakes, and then gently pull against the brakes
  3. Brake firmly while slowly moving forward - 正确答案
  4. Brake slowly while slowly moving backward

要测试服务刹车系统,你应该在缓慢前进的同时牢牢踩住刹车

Air braking takes more time than hydraulic braking because:

  1. None of these answers are correct
  2. Air takes more time to flow through the lines than hydraulic fluid - 正确答案
  3. Air brakes require heavier return springs
  4. Air brakes use different brake drums

气刹比液压刹车需要更多时间,因为空气比液压油需要更多的时间流经管线

Repeatedly partially releasing and pressing the brake pedal may result in:

  1. None of these answers are correct
  2. No change of brake air pressure
  3. A loss of brake air pressure - 正确答案
  4. A build up of brake air pressure

反复释放和踩下刹车踏板可能会导致刹车气压损失

商业车驾照气刹理论模拟考试