问题
单项选择题
一台50Hz、4极的异步电动机，满载时转差率为5%，电动机的转速是（）r／min。
A.1425
B.1500
C.1250
D.1000
答案
参考答案：A
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一台50Hz、4极的异步电动机，满载时转差率为5%，电动机的转速是（）r／min。
A.1425
B.1500
C.1250
D.1000
参考答案：A
| 完形填空。 | ||||
| Twice-crowned beauty queen Michele Reis is 18 years old. But she is still mummy's little girl. Mrs. Reis described her 1 feeling the night her daughter 2 the Miss Hong Kong Beauty Pageant, "I felt 3 I suffered the loss of something important when they crowned her, not because I was not happy for her, 4 because I knew my daughter no longer belonged to me alone and I would have to share her 5 everyone else." But Mom should have seen it coming. With her Portuguese-Chinese heritage（血统）,Michele was quite 6 as a youngster. She 7 modeling part time as a school girl. There was something 8 about her even as a child. People in the street always turned around to 9 her. 10 her recent fame, the beauty queen said, "Sometimes I have the feeling that I am no longer myself now. My schedule is 11 . I'm not getting enough 12 , and I am always 13 from one place to another. There are times when I am 14 tired that I just want to sit and sleep." Being a celebrity has another 15 . "People no longer regard me as an 16 person. It's becoming more 17 for me to make friends, and I've learned to 18 old friends because they 19 treat me as Michele 20 Miss Hong Kong." | ||||
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