【判断题】【消耗次数：1】
梁内箍Φ6@200表示为HPB235级钢筋直径为6mm，钢筋中心距为200mm.
①
正确
②
错误
参考答案：
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某钢筋混凝土矩形截面梁，混凝土强度等级C25，钢筋采用HRB400级，纵向受拉钢筋为 3根直径18mm，截面尺寸bxh=200mmx500mm， 混凝土保护层厚度25mm。该梁承受最大弯矩设计值M=100 kN*m 。试复核梁是否安全。
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