問題詳情
42. For brake booster leakage test, we should do the below procedure
(A)install the vacuum gauge between booster and check valve
(B)start the engine and keep the engine running at all time
(C)read the vacuum gauge
(D)make sure vacuum reading shouldnot decrease within 30 sec。
參考答案
答案：A,C,D
難度：非常困難0
統計：A(1),B(1),C(0),D(1),E(0)