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当前学科:第十八章工程地质
题目:
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基础施工中,土层出现流砂现象一般是由下列哪个原因引起的?()
A . 地下水产生的静水压力
B . 地下水产生的动水压力
C . 承压水对基坑的作用
D . 开挖基坑坡度过陡
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