题目内容

应力是横截面上的平均应力

A. 对
B. 错

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线应变是构件中单位长度的变形量

A. 对
B. 错

切应变是变形后构件内任意两根微线段夹角角度的变化量

A. 对
B. 错

Short Conversation1[音频]

A. She should talk about the promotion with her boss.
B. She should keep shut unitl a better job is available.
C. She should quit her job to get a better one.
D. She should urge her boss to keep the promise.

补全所缺诗句:(),夕餐秋菊之落英。

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