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【单选题】
适筋截面承载力实验中,受拉钢筋屈服后,()
A.
该梁立即达到最大承载力而破坏
B.
该梁承载力还能略有增加,待受压区边缘混凝土达到极限压应变后发生破坏
C.
该梁达到最大承载力,随后承载力缓慢下降,直至破坏
D.
该梁达到最大承载力,一直维持到受压区边缘混凝土达到极限压应变而破坏
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