称取500g水泥和124.5g水,进行水泥标准稠度用水量试验。今测得试锥下沉深度S = 27mm,则该标准稠度用水量P =( )%(附P = 33.4 - 0.185S)
(A)24.9
(B)28
(C)28.4
(D)27
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