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硅酸盐水泥(代号P.Ⅰ、P.Ⅱ);其强度等级分为:32.5,32.5R ;42.5,42.5R ;52.5,52.5R ;62.5,62.5R级。()

A.Ⅰ、P.Ⅱ);其强度等级分为:32.5,32.5R
B.5,42.5R
C.5,52.5R
D.5,62.5R级。()

【参考答案】

:错误