题目内容

当环境温度升高时，钢材的强度（）。

A. 下降
B. 不变
C. 上升
D. 可能下降，可能上升

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A. 摩阻力
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A. regarding as
B. concerning
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A. main
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C. urgent
D. upset

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A. resigned
B. released
C. dispelled
D. dismissed