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用底部剪力法计算多层结构总竖向地震作用时的等效质量系数一般取(   )。

单选题
2021-07-17 23:43
A、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt">0.75</span>
B、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt">0.80</span>
C、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt">0.85</span>
D、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt">1.00</span>
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正确答案
A

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