试题与答案

跨度为8m、混凝土设计强度等级为C40的钢筋混凝土简支梁,混凝土强度最少达到()N/

题型:单项选择题

题目:

跨度为8m、混凝土设计强度等级为C40的钢筋混凝土简支梁,混凝土强度最少达到()N/mm2时才能拆除底模。

A.28 

B.30 

C.32 

D.34 

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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