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砌筑砖基础的砂浆强度等级不小于( )

A、M5

B、M2.5

C、M1 

D、M0.4

时间：2021-07-17 23:50 关键词：土木工程专升本高层建筑结构 2019级毕业清考（考试分） 2020年第二学期补考

答案解析

B

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