以下有關梁受彎矩作用之彎曲應力公式，下列敘述何者有誤？(A)梁之中性軸將通過梁斷面之形心(B) I為梁斷面之慣性矩(C) y為自梁受拉側至中性軸的距離(D)若欲求梁斷面最上、下緣之彎曲應力，

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50. 以下有關梁受彎矩作用之彎曲應力公式，下列敘述何者有誤？
(A)梁之中性軸將通過梁斷面之形心
(B) I為梁斷面之慣性矩
(C) y為自梁受拉側至中性軸的距離
(D)若欲求梁斷面最上、下緣之彎曲應力，該公式亦可表示為σ＝ M/ S，其中S為梁斷面之斷面模數

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