题目内容：
以下对于非均匀形核的描述错误的是（）
A.一般所有的杂质都可以充当形核的基底
B.降低湿润角，一般需要选择与晶核相同晶体结构，相近的点阵常数作为异质形核点
C.当同质外延或直接从单质熔液生长单晶时，润湿角为零
D.杂质表面的形状对于表面形核有影响，凹面促进形核
参考答案：
选择题：以下对于非均匀形核的描述错误的是（）
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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