单项选择题

A ductile metal becomes harder and stronger as it is subjected to cold working

A.正确
B.错误
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单项选择题
Dislocations make it easier for slip or plastic deformation to occur.
A.正确
B.错误
单项选择题
有四个大学生都打算创业。小红非常渴望成功;小丽凡事都先做最坏的打算;小明很自信,自律性很强;小强习惯忍让,抗压性强。你认为四人相比,谁最有可能放弃创业机会( ) A. 小红 B. 小丽 C. 小明 D. 小强
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