【单选题】【消耗次数：1】
在下列减小受弯构件挠度的措施中错误的是（）
①
提高混凝土强度
②
增大构件跨度
③
增大截面高度
④
增大钢筋用量
参考答案：
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相关题目
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下面的关于钢筋混凝土受弯构件截面弯曲刚度的说明中，错误的是
①
截面弯曲刚度随着荷载增大而减小
②
截面弯曲刚度随着时间的增加而减小
③
截面弯曲刚度随着裂缝的发展而减小
④
截面弯曲刚度不变
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钢筋混凝土受弯构件挠度计算公式正确的是（ ）。
①
<img class="kfformula" src="20200804/1596527988630314.png" data-latex="f=S\frac {{M}_{q}{l}^{2}_{0}} {{B}_{s}}"/>
②
<img class="kfformula" src="20200804/1596527988806749.png" data-latex="f=S\frac {{M}_{k}{l}^{2}_{0}} {{B}_{s}}"/>
③
<img class="kfformula" src="20200804/1596527988257843.png" data-latex="f=S\frac {{M}_{k}{l}^{2}_{0}} {B}"/>
④
<img class="kfformula" src="20200804/1596527988857756.png" data-latex="f=S\frac {{M}_{q\, }{l}^{2}_{0}} {B}"/>
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