当地下工程采用塑料防水板作为防水层时，其铺设应超前二次衬砌混_爱下问搜题

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问题多项选择题

当地下工程采用塑料防水板作为防水层时，其铺设应超前二次衬砌混凝土施工，超前距离宜为（）米。

A.45

B.35

C.25

D.15

E.5

答案

参考答案：D, E

选择题

The boy ______ his friends was playing in the street when the earthquake happened. [ ]

A. with

B. and

C. as well as

D. as far as

单项选择题

外感咳嗽属于

A．邪实
B．正虚
C．邪实与正虚并见
D．痰湿