高速行车中行车制动突然失灵时，驾驶人要如何制动？A．连续踩踏_爱下问搜题

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问题单项选择题

高速行车中行车制动突然失灵时，驾驶人要如何制动？

A．连续踩踏制动踏板

B．抢挂低速档减速后，使用驻车制动

C．迅速踏下离合器踏板

D．迅速拉紧驻车制动器操纵杆

答案

参考答案：B

选择题

Go back home now, Mary. Your parents ______ your safety.

A．are concerned about

B．are concerned with

C．are concerned on

D．concern of

选择题

_______, you will succeed in the singing competition. [ ]

A. Hurry up

B. Take it easy

C. Look out

D. Be careful