单项选择题

With regard to the mechanical properties, metals are typically hard, also relatively stiff and strong when in solid state.

A.正确
B.错误
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单项选择题
From the microstructure, atoms in metals and their alloys are arranged in a very orderly manner.
A.正确
B.错误
判断题
醉的主要调味品是酒，通过酒和其它调味品的混合作用使原料成“熟”。
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