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平面弯曲时，梁上的外力（或外力偶）均作用在梁的（）上。
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平面弯曲时，梁上的外力（或外力偶）均作用在梁的（）上。
A、轴线上
B、纵向对称面内
C、轴面内
时间：2022-01-03 07:29
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B
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杆件受到与杆轴线相垂直的外力或外力偶的作用，将产生（）变形。
当杆件受到垂直于杆轴的外力或在杆轴平面受到外力偶作用时，杆的轴线由直线变为曲线，这种变形称为弯曲
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杆发生弯曲变形后，轴线和外力（）的弯曲称为平面弯曲。
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平面弯曲时，梁上的外力（或外力偶）均作用在梁的（）上。
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