Amorphous materials do not have clearly defined freezing or melting points as do crystalline materials.
Amorphous materials do not have clearly defined freezing or melting points as do crystalline materials.
A.正确
B.错误
正确答案:正确
Amorphous materials do not have clearly defined freezing or melting points as do crystalline materials.
A.正确
B.错误
正确答案:正确
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