提出社会分层三个标准的是哪个社会学家。（）
A、迪尔凯姆
B、帕森斯
C、韦伯
D、吴文藻
参考答案：C
句型转换。
1. How about the weather? (改为同义句)
_____ the weather?
2. I thought he would go to college the next year, _____? (完成反意疑问句)
3. I really don't know what I should do about it. (改为同义句)
I really don't know_____about it.
4. Stop talking in the reading room, _____? (完成反意疑问句)
某台水轮发电机的额定容量为76500kVA，cos∮=0.85，ne=100r/min，频率f=50Hz，求该机的磁极数为多少？
