【单选题】【消耗次数：1】
减少钢筋混凝土受弯构件的裂缝宽度，首先应考虑的措施是
①
采用直径较细钢筋
②
增加钢筋面积
③
增加截面尺寸
④
提高混凝土强度等级
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受拉钢筋重心水平处构件底面上混凝土的裂缝宽度
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