单项选择题
A.10B.20~25C.10~20D.15~20
A.15kN∕m3B.18kN∕m3C.10.78kN∕m3D.20.58kN∕m3
A.0.3%~0.8%B.0.75%~1.5%C.0.03%~0.02%D.0.65%~1.8%
A.中细砂层B.坍墙掉块C.一般砂砾地层D.漏水地层
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