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完形填空 My husband has been ill in hospital for two months and I have learned to make do with very little (凑合过日子). One Sunday afternoon, I went to buy a 1 for my daughter with my friend.  A woman who was also buying books in the bookstore saw me and said, 'I 2 you must be having a hard time.' I just smiled and said, 'I'm okay. I have eight dollars and I have food at home, so I'll be 3 .' A bout ten 4 later she came up to me and said, 'Can I take a look at the book that you've 5 ? It seems very interesting!' I said all right and gave it to her. Just then 6 called me and I immediately went out. 7 I returned she thanked me and 8 my book. On my way home my friend who was driving said, 'You told me you didn't had much 9 ?'  I replied, 'I don't.' She said, 'Oh yes, you do!' I assured (向……保证) her I 10 had two dollars left, but still she insisted I 11 plenty of money. 'Look at your book in your bag,' she 12 . 'There's a hundred dollar bill in it.' I turned over the page and got so 13 ! There actually was a hundred dollar 14 that seemed to have fallen out of my book! I 15 her, very surprised, and said, 'I don't know 16 that came from. I have no idea because I certainly did not have a hundred 17  ! ' I thought and thought about the money for days after that. Then I realized it must have come from 18 who asked to borrow my book in the bookstore. How 19 of her! And what a wonderful gift to 20 when I am down to my last two dollars! (     )1. A. storybook (     )2. A. suggest (     )3. A. sad (     )4. A. hours (     )5. A. written (     )6. A. someone (     )7. A. Since (     )8. A. threw away (     )9. A. wisdom (     )10. A. never (     )11. A. had (     )12. A. said (     )13. A. worried (     )14. A. letter (     )15. A. looked at (     )16. A. why (     )17. A. bags (     )18. A. the lady (     )19. A. foolish (     )20. A. make B. toy bear B. wish B. upset B. minutes B. chosen B. nobody B. When B. asked for B. money B. always B. spent B. cried B. satisfied B. card B. quarreled with B. how B. books B. the writer B. kind B. refuse C. birthday cake C. hear C. fine C. days C. hidden C. everyone C. Before C. looked into C. water C. only C. lost C. ordered C. surprised C. picture C. believed in C. what C. stores C. my friend C. energetic C. invent D. concert ticket D. think D. honest D. weeks D. finished D. anybody D. Because D. gave back D. patience D. once D. won D. shouted D. relaxed D. bill D. laughed at D. where D. dollars D. my daughter D. proud D. receive
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【简答题】在正弦交流电路中,已知流过纯电感元件的电流I=5A,电压 ,若u、i取关联方向,则XL= Ω。
【简答题】在正弦交流电路中,已知流过电感元件的电流I=10A,电压u=20 sin(1000t)V,则电流i= A,感抗 = Ω,电感L= H,无功功率 = var。
【单选题】在正弦交流电路中,已知流过电感元件的电流I=5A,电压U L = 则感抗X L =()
A.
(A)
B.
(B)
C.
(C)
D.
(D)
【单选题】PABX/PSTN接口支持两种拨号方式:脉冲拨号和()。
A.
语音拨号
B.
双音多频拨号
C.
电压拨号
D.
电流拨号
【简答题】在正弦交流电路中,已知流过纯电感元件的电流I=5A,电压 ,若u、i取关联方向,则 = Ω。
【单选题】PABX/PSTN支持两种拨号方式:双音多频拨号和()。
A.
语音拨号
B.
电压拨号
C.
脉冲拨号
D.
电流拨号
【单选题】参观幼儿园同学们看了哪两个班的区角环境创设?
A.
大二班的《古堰画乡》和大三班的《开心影楼》
B.
大三班的《古堰画乡》和大二班的《开心影楼》
C.
中二班的《古堰画乡》和中三班的《开心影楼》
D.
中三班的《古堰画乡》和中二班的《开心影楼》
【简答题】在正弦交流电路中,已知流过电感元件的电流I=10A,电压 则电流i=____,感抗X L =____,电感=____,无动功率Q L =____.
【简答题】在正弦交流电路中,已知流过电感元件的电流 I =10A ,电压 ,则电流 i = A ,感抗 X L = ,电感 L = H ,无功功率 Q L = 。
【单选题】在正弦交流电路中,已知流过电感元件的电流I=5A,电压UL= 102sin(1000t)V,则感抗XL=( )。
A.
22Ω
B.
20Ω
C.
D.
2×10-2Ω
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