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【单选题】
已知B-5为双向板,厚度h=110mm,框架梁截面为250mm×650mm,均居中布置,一类环境,钢筋采用HRB400级,混凝土采用C25,分布筋为A6@250。则X向板底钢筋第一根钢筋位置:
A.
距离90
B.
距离100
C.
距离50
D.
距离75
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A.
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