Brakes (A5)第 50 / 120 题
The primary purpose of a brake power booster is to:
a.Store brake fluid
b.Adjust the parking brake
c.Prevent wheel lockup
d.Reduce the pedal effort required to apply the brakes
解析
The vacuum or hydraulic booster multiplies the driver's pedal force so less effort is needed for firm braking. A failed vacuum booster or leaking check valve produces a hard pedal. It works with, not instead of, the hydraulic system.
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