试题与答案

-4, 2, 18, 22, ( ), 830。 A.280 B.346 C.3

题型:单项选择题

题目:

-4, 2, 18, 22, ( ), 830。

A.280

B.346

C.380

D.456

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:解答如下:N=4088kN>0.3fcA=2102kN,取N=2102kN根据《混凝土结构设计规范》11.4.7条:选用四肢箍,加密区箍筋间距s=100mm,则:Asv1≥2.263×100/4=56.6mm2选用,故配置。复核,规范表1...

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