单项选择题
A.0.90mm B.0.080mm C.0.20mm
A.粉煤灰水泥 B.铝酸盐水泥 C.硫酸盐水泥 D.油井水泥
A、f-CaO B、MgO C、SO3 D、R2O(碱)
A.55~60 B.105~110 C.80~110 D.110~150
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