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


If you do not have automatic tank drains, how ofter should you drain compressed air storage tanks?

  1. None of these answers are correct
  2. After every four hours of service
  3. At the end of each day of driving - 正确答案
  4. Once a week

如果你驾驶的卡车上的压缩空气储存罐没有自动释法功能,则应在每天行驶结束时排空压缩空气储存罐

Under normal conditions in order to engage the parking brakes. The driver should:

  1. Let the air out of the air brake system - 正确答案
  2. Turn off the engine
  3. Be sure air brakes system is fully pressurized.
  4. None of these answers are correct

正常情况下要启用驻车刹车器。 驾驶员应将空气排出空气刹车系统

The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:

  1. The braking effect of the engine - 正确答案
  2. The use of the front brakes limiting valve
  3. None of these answers are correct
  4. Use of spring brakes

在正常情况下,车辆在长时间下坡情况下,使用刹车器只是对发动机刹车效果的辅助

If you must make an emergency stop, you should brake so you:

  1. None of these answers are correct
  2. Use the full power of the brakes to lock them
  3. Can steer and so your vehicle stays in a straight line. - 正确答案
  4. Use the hand brake before the brake pedal

如果必须紧急停车,则应刹车以便转向,使车辆保持在一条直线上。

The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:

  1. 2 psi in 45 seconds
  2. 1 psi in 30 seconds
  3. 4 psi in 50 seconds
  4. 3 psi in one minute - 正确答案

发动机熄火且泊车刹车系统打开的情况下,卡车或巴士的空气损失率在一分钟内不应超过3 psi(磅每平方英寸)

The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks falls below ___ PSI

  1. 30
  2. 80
  3. 60 - 正确答案
  4. 40

驾驶员必须能够看到气压过低警告,该警告会在行车(服务)刹车储蓄气缸中的压力降至60 PSI以下前发生

Why should you drain water from compressed air tanks?

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

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 air brake lag distance at 55 mph on dry pavement adds about __ feet

  1. 32 feet - 正确答案
  2. 52 feet
  3. 20 feet
  4. 12 feet

在干燥路面上以55 MPH(英里每小时)的速度行驶时的空气刹车滞后距离增加了约32英尺

To test air service brakes you should:

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

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

  1. No change of brake air pressure
  2. None of these answers are correct
  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

The most important thing to do when a low air pressure warning comes on is:

  1. to stop and safely park as soon as possible. - 正确答案
  2. Upshift
  3. Downshift
  4. None of these answers are correct

出现低气压警告时,最重要的事情是尽快在安全情况下停下来。

The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about __ mph below the posted speed for your safety and release your brake

  1. 12 mph
  2. 10 mph
  3. 10 mph
  4. 5 mph - 正确答案

在长时间的陡坡下坡时,选择合适的档位后,正确使用刹车的方法 - 刹车直到你的速度比路面限制的速度低大约5 mph(每小时英里)为止,以确保你可以安全并释放刹车器

Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?

  1. Reduce your speed, and test the remaining system while under way.
  2. None of these answers are correct
  3. Stop right away and safely park, Continue only after the system is fixed. - 正确答案
  4. Reduce your speed and drive to the nearest garage for repairs.

你的卡车或客车具有双气压刹车系统。 如果仅一个系统出现低气压警告,则应立即在安全情况下停下来,仅在系统修复后才可以继续上路。

A slack adjuster's free play needs to be adjusted if it is more than about __, how many inches when you pull hard on it?

  1. 1/2
  2. 1 Inch - 正确答案
  3. 1/4
  4. 2/4

如果松弛调节器的自由松动间距大于1英寸,则需要对其进行调节

With air brake vehicles, the parking brakes should be used:

  1. Any time when the vehicle is parked - 正确答案
  2. To hold your speed when going downhill
  3. None of these answers are correct
  4. As little as possible

对于带气刹系统的车辆,停车时应随时使用驻车(泊车)刹车

Emergency stab braking is:

  1. Use light steady pressure on the brake pedal
  2. When you press hard on a brake pedal and apply hand valve while you stop
  3. None of these answers are correct
  4. Press on the brake pedal as hard as you can, release the brakes when the wheels locked, brakes again when the wheels start rolling - 正确答案

紧急点刹是指在遇到紧急情况时,尽可能用力踩刹车踏板,当车轮锁住时释放刹车踏板,然后在车轮重新开始滚动时再次踩下刹车踏板

An air brake system is fully charged at what PSI?

  1. 75
  2. 120
  3. 125 - 正确答案
  4. 115

空气刹车系统在125 PSI(每平方英寸压力)时为充满气

Why drain water from compressed air tanks?

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

你应该定期的排出压缩空气罐中的水。 因为水在寒冷的天气会结冰并导致刹车故障

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

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

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。

How should you check that your service brakes are working properly?

  1. None of these answers are correct
  2. Park on level ground, wait until normal air pressure is reached, release the parking brake and move forward slowly at about 5 mph. Then apply the brakes firmly using the brake pedal. - 正确答案
  3. Park on slight grade, drain off air pressure, set parking brake and check to to movement.
  4. Park on a level ground, chock the wheels, engage the parking brakes when you have the correct amount of air pressure to do so and shut the engine off.

检查服务刹车系统是否正常工作。 将车停在水平地面上,等到达到正常气压后,松开泊车刹车器并以约每小时5英里(5 MPH)的速度缓慢前进。 然后使用刹车踏板稳固地踩下刹车。

商业车驾照气刹理论模拟考试