边坡开挖应分层、分段开挖,砂土和碎石类土分层开挖深度宜取()
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边坡开挖应分层、分段开挖,砂土和碎石类土分层开挖深度宜取()
A.1m?2m
B.0.3m?0.5m
C.5m?10m
D.0.5m?1.0m
参考答案:
边坡开挖应分层、分段开挖,砂土和碎石类土分层开挖深度宜取()
A.1m?2m
B.0.3m?0.5m
C.5m?10m
D.0.5m?1.0m
参考答案: