题目内容

间接复合可分为：

A. 电子俘获过程
B. 电子发射过程
C. 空穴俘获过程
D. 空穴发射过程

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A. 辐射复合
B. 无辐射复合
C. 俄歇复合
D. 间接复合

A. sunny
B. windy
C. rainy
D. cloudy

A. You can go swimming.
B. I'm thinking of spending a couple of days there.
C. Neither too hot in summer nor too cold in winter.

A. Very hot and dry.
B. Yes, the heat is killing me.
C. I bet it will.