重结晶溶剂的选择原则有

问题：

A . 对欲结晶成分加热时溶解度大，冷却时溶解度小
B . 对杂质冷热都不溶
C . 对杂质加热时溶解度大，冷却时溶解度小
D . 对杂质冷热都易溶
E . 沸点很高

参考答案：A,B,D

参考解析：

本题暂无解析

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