單項(xiàng)選擇題水泥稠度檢測在拌合水泥凈漿時,拌合方法正確的是()。

A.低速攪拌60s,停30s,高速攪拌150s,停機(jī)
B.高速攪拌60s,停30s,低速攪拌150s,停機(jī)
C.高速攪拌120s,停15s,低速攪拌120s,停機(jī)
D.低速攪拌120s,停15s,高速攪拌120s,停機(jī)


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