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【单选题】
某独立柱基础垫层设计为4000×3600×250mm,基坑深度2.5m。施工组织设计规定四边放坡,放坡系数为1:0.30,每边增加工作面300mm,该基坑开挖工程量( )。A.
36.00 m3
B.
48.30 m3
C.
39.60 m3
D.
66.68 m3
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A.
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B.
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