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当前学科:第二十一章岩体工程与基础工程
题目:
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我国工程岩体分级标准中,岩石的坚硬程度是按下列哪个指标确定的?()
A . 岩石的饱和单轴抗压强度
B . 岩石的抗拉强度
C . 岩石的变形模量
D . 岩石的粘结力
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