搜题

问题更新时间2025/11/28 14:48:00

白色硅酸盐水泥中应严格控制()的含量。

A、CaO

B、Fe₂O₃

C、SiO₂

D、Al₂O₃

答案

B

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王老师:19139051760(拨打)

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