题目内容 (请给出正确答案)
提问人:网友13***556 发布时间:2022年6月13日 19:41
[ 单项选择题]

无地下水的密实、中密的砂土和碎石类土(充填物为砂土)允许土壁无支撑的垂直挖深为()。

A.1.0m

B.1.25m

C.1.5m

D.2.0m

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