首页/ 题库 / [判断题]某混凝土预制构件厂,生产钢筋混凝土大量需的答案

某混凝土预制构件厂,生产钢筋混凝土大量需用设计强度为C30的混凝土,已知混凝土强度标准差为4.0MPa,则混凝土的配制强度为36.58MPa。

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2022-01-10 19:45
A、对
B、错
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