【单选题】
对硅酸盐水泥的分类,下列选项正确的是( )。
A.42.5,42.5R,52.5,52.5R,62.5
B.32.5,32.5R,42.5,42.5R,52.5,52.5R
C.42.5,42.5R,52.5,52.5R,62.5,62.5R
D.32.5,32.5R,42.5,42.5R,52.5,52.5R,62.5,62.5R
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根据网考网移动考试中心的统计,该试题:
1%的考友选择了A选项
28%的考友选择了B选项
69%的考友选择了C选项
2%的考友选择了D选项