7【单选】 矩形截面简支梁,bXh=200mmX500mm,混凝土强度等级为C20,箍筋采用HPB300级钢筋,经计算确定为双肢Ф 8 @200,该梁沿斜截面破坏时,为( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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