【单选题】【消耗次数：1】
钢筋混凝土轴心受拉构件的平均裂缝间距与纵向钢筋直径及配筋率的关系是（?）。
①
直径越小，平均裂缝间距越小
②
配筋率越大，平均裂缝间距越大
③
直径越大，平均裂缝间距越小
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相关题目
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钢筋混凝土构件的裂缝宽度是指（ ）。
①
受拉钢筋重心水平处构件底面上混凝土的裂缝宽度
②
受拉钢筋重心水平处构件侧表面上混凝土的裂缝宽度
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构件底面上混凝土的裂缝宽度
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构件侧面上混凝土的裂缝宽度
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