题目内容

下列( )项属于超出正常使用极限状态。

A. 在荷载设计值作用下轴心受拉构件的钢筋已达到屈服强度;
B. 在荷载标准值作用下梁中裂缝宽度超出《混凝土结构设计规范》限值;
C. 吊车梁垫板下混凝土局部受压,承载力不足;
D. 构件失去稳定。

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