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。

免费在线商业车驾照气刹理论模拟考试


Excessive use of the service brakes results in overheating which can lead to:

  1. Proper adjustment of S-cam
  2. Increase contact between the brake drums and linings
  3. Expansion of the brake drums - 正确答案
  4. None of these answers are correct

过度使用服务刹车系统会引起刹车过热,从而导致刹车鼓膨胀

The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:

  1. Air pressure
  2. Hydraulic pressure
  3. Spring pressure - 正确答案
  4. None of these answers are correct

重型车辆上的泊车或紧急刹车器只能通过诸如弹簧压力之类不能泄漏的东西保持在原位

To check the free play of manual slack adjusters of S-cam brakes, you should park on:

  1. None of these answers are correct
  2. Level ground and apply the parking brakes, then apply service brakes.
  3. Level ground and drain off air pressure before checking the adjustment.
  4. Level ground, chock the wheels and release the parking brakes. - 正确答案

要检查S型凸轮刹车器上的手动松紧调节器的自由活动间距,应将车辆停在水平地面上,用东西顶住车轮防止滑动,然后松开泊车刹车器。

The air compressor governor controls:

  1. None of these answers are correct
  2. Air pressure applied to the brakes
  3. Air is pumped into the air tanks - 正确答案
  4. Speed of the air compressor

空气压缩机调速器的功能 - 控制将空气泵入至储气缸

The safety valve discharges automatically at the pressure of:

  1. 100
  2. 50
  3. 120
  4. 150 - 正确答案

安全阀在150 PSI的压力下自动排放

The brake pedal in an air brake system:

  1. Control the air pressure applied to put on the brakes. - 正确答案
  2. Control the speed of the air compressor.
  3. None of these answers are correct
  4. Is connected to slack adjusters by a series of rods and linkages

气压刹车系统中的刹车踏板是控制施加在刹车器上的气压。

When is OK to leave your truck unattended without applying the parking brakes and choking the wheels?

  1. If you are only away for a few minutes.
  2. If you are parked on the leveled ground
  3. If you are conducting a pre-trip inspection
  4. NEVER - 正确答案

当要离开你的卡车时,永远不要忘记拉停车开关

The modern air brake system combines three different systems. They are the service, the parking, and __ brakes.

  1. None of these answers are correct
  2. Foot
  3. Emergency - 正确答案
  4. Drum

现代的气压刹车系统结合了三种不同的系统。 它们是服务(行车),泊车和紧急刹车。

The braking power of spring brakes:

  1. None of these answer are correct
  2. Depends on the adjustment of the service brakes. - 正确答案
  3. Is not affected by the condition of the service brake
  4. Increases when the service brakes are hot

弹簧刹车器的刹车力取决于行车(服务)刹车器的调节

Air braking takes more time than hydraulic braking because:

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

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

商业车驾照气刹理论模拟考试