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砂浆分层度值的单位应是( )
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砂浆分层度值的单位应是( )
A、kg
B、g
C、mm
D、cm
时间:2021-09-02 13:46
关键词:
国家开放大学
建筑材料(A)
答案解析
C
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砂浆分层度值的单位应是( )
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砂浆分层度值的单位应是( )
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