试题与答案

金属凝固过程中,晶核越多,晶核的生长速度越慢,则凝固后的晶体晶粒()A、不均匀; B、

题型:单项选择题

题目:

金属凝固过程中,晶核越多,晶核的生长速度越慢,则凝固后的晶体晶粒()

A、不均匀;

B、越细小;

C、越粗大;

D、越均匀

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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