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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免费在线商业车驾照气刹理论模拟考试


Some air brake systems have an alcohol evaporator. What may happen if you don't keep the proper level of am alcohol?

  1. Ice may form on the brake drums and wear them out
  2. Ice may form in the air storage tank and cause a brake failure - 正确答案
  3. The S-cam may not take back when you release the brake pedal
  4. None of these answer are correct

一些气压刹车系统具有酒精蒸发器。 如果你没有保持适当的酒精,可能会在储气罐中形成冰块并导致刹车故障/失灵。

If your vehicle has an alcohol evaporator, every day during cold weather you should:

  1. Check and fill the alcohol level - 正确答案
  2. Change the alcohol from a new bottle
  3. None of these answers are correct
  4. Check the oil for alcohol content

如果你的车辆装有酒精蒸发器,则在寒冷天气中,你每天都应检查并补充酒精含量

When brakes are applied the brake shoes will press against the:

  1. Slack adjuster.
  2. None of these answers are correct
  3. S-cam
  4. Brake drum or disk - 正确答案

当刹车时,刹车片将压在刹车鼓或刹车盘上

The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below __ PSI

  1. 30
  2. 60
  3. 40
  4. 20 - 正确答案

当气压降至20 PSI以下时,直式卡车上使用的弹簧刹车器将使你的车停下来

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

  1. Increase contact between the brake drums and linings
  2. Expansion of the brake drums - 正确答案
  3. Proper adjustment of S-cam
  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

商业车驾照气刹理论模拟考试