本线封锁，邻线（线间距小于6.5m）来车，速度vmax>160km/h时，本

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问题单项选择题

本线封锁，邻线（线间距小于6.5m）来车，速度vmax>160km/h时，本线必须下道，距离不小于（）m。

A、800

B、1400

C、2000

D、3200

答案

参考答案：C

填空题

用括号内所给单词的适当形式填空。

1.The people in that country are pretty _____ (relax) about time.

2. Before you go to western countries, you'd better learn to use _____ (knife)

and forks.

3. Have you got used to _____ (get) up early in the morning?

4. We never visit a friend's house without _____ (call) first.

5. They are busy _____ (practice) using chopsticks now.

单项选择题

利湿除痰法不常用于哪项疾病：

A．带下病
B．月经过少
C．闭经
D．不孕症
E．胎动不安