当深基坑开挖采用放坡无法保证施工安全或现场无放坡条件时，一般

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问题单项选择题

当深基坑开挖采用放坡无法保证施工安全或现场无放坡条件时，一般采用( )作为临时支挡。

A．支护结构

B．型钢支撑桩

C．横撑式支撑

D．悬臂式挡墙

答案

参考答案：A

选择题

What worried the child most was ______ to visit his mother in the hospital.

A. his not allowing B. his not being allowed

C his being not allowed D. having not being allowed

问答题简答题

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