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． 14.正应力计算公式σ=FN/A适用范围是()。

A、材料的比例极限之内

B、材料的屈服极限之内

C、材料的弹性极限之内

D、直杆的轴向拉伸与压缩

时间：2021-09-02 00:21 关键词：现代兴业兰州理工大学工程管理建筑力学(1.2)

答案解析

D

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