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8在任意截面的任意点处,正应力σ与剪应力τ的夹角α=( )。
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8在任意截面的任意点处,正应力σ与剪应力τ的夹角α=( )。
A、)
B、)
C、)
D、)
时间:2021-09-08 14:07
关键词:
和学
华北水利
土木工程
材料力学
答案解析
A
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同一截面上的正应力σ与剪应力τ必相互垂直。
在一截面的任意点处,正应力σ与切应力τ的夹角________。
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在一截面的任意点处,正应力σ与切应力τ的夹角( ) 得分:4分
在一截面的任意点处,正应力σ与切应力τ的夹角描述错误的是( ) 得分:4分
8在任意截面的任意点处,正应力σ与剪应力τ的夹角α=( )。
关于下列结论的正确性:1. 同一截面上正应力σ与剪应力τ必相互垂直2. 同一截面上各点的正应力σ必定大小相等、方向相同3. 同一截面上各点的剪应力必相互平行现有四种答案:
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