单选题:根据《建设工程工程量清单计价规范》(GB50500),按设计图示尺寸以体积计算,扣除单个0.3m2以上的孔洞所占体积的石

题目内容:
根据《建设工程工程量清单计价规范》(GB50500),按设计图示尺寸以体积计算,扣除单个0.3m2以上的孔洞所占体积的石砌体是(  )。 A.石基础
B.石栏杆
C.石墙
D.石勒脚

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答案解析:

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