单选题

普通硅酸盐水泥,在进行强度检验时,其3天和28天的抗压强度应不小于()

A17.0MPa,42.5MPa

B22.0MPa,42.5MPa

C23.0MPa,42.5MPa

D27.0MPa,52.5MPa

正确答案

来源:www.examk.com

答案解析