当点火钥匙从锁芯拔下时，发动机防盗系统将被自动重新设定。_爱下问搜题

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问题判断题

当点火钥匙从锁芯拔下时，发动机防盗系统将被自动重新设定。

答案

参考答案：对

选择题

Mrs Smith ____ her keys in the office, so she had to wait until her husband ____ home.

A. has left; comes
B. left; had come
C. had left; would come
D. had left; came

单项选择题

调车手信号指挥机车向显示人反方向稍行移动的信号昼间为（）。

A.拢起的红色信号旗直立平举，再用展开的绿色信号旗上下小动

B.拢起的红色信号旗直立平举，再用展开的绿色信号旗左右小动

C.拢起的红色信号旗高举，再用展开的绿色信号旗左右小动

D.拢起的红色信号旗高举，再用展开的绿色信号旗上下小动