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A ductile metal becomes harder and stronger as it is elastically deformed.
A ductile metal becomes harder and stronger as it is elastically deformed.
A.正确
B.错误
正确答案：错误
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材料概论
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Steel is an interstitial solid solution with impurity carbon atoms in iron crystal lattice.
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Ferrous metal has a relatively low density and a comparatively high electrical conductivity.