电场中某三条等势线如图实线a、b、c所示。一电子仅在电场力作用下沿直线从P运动到

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问题:

电场中某三条等势线如图实线a、b、c所示。一电子仅在电场力作用下沿直线从P运动到Q,已知电势φabc,这一过程电子运动的v一t图象可能是下列各图中的

 

考点:电场强度的定义式
题型:选择题
完形填空。
     When Liu Kaiqu was young he was poor in Shanghai. One day he __1__ a picture of a tiger and tried
 to sell it on the street. It caught the __2__ of an American, who asked, " How much does it cost?" He
 said,"500 dollars. "The foreigner thought it was too __3__ and asked again," Can you make it cheaper?" 
 He answered,  " No. " Then he tore (撕) it to pieces. In great __4__ , the foreigner said, "Young man, are
  you angry?" " No, sir. I'm not angry. I sold it __5__ 500 dollars because I thought it was worth the
 __6__ . But you wanted a lower price. It means __7__ didn't think so and it is not good enough. I'll go on
  working __8__ until my customers (顾客) are satisfied. "
    At that time, __9__ Liu Kai qu was not famous at all, he never __10__ his dream. Now he is
 well-known all over the world as a great artist.
( ) 1. A. stole            
( ) 2. A. attention        
( ) 3. A. terrible          
( ) 4. A. fear              
( ) 5. A. over              
( ) 6. A. size              
( ) 7. A. we                
( ) 8. A. faster and faster
( ) 9. A. though            
( ) 10. A. broke off        
B. picked            
B. instruction      
B. big              
B. difficulty        
B. for              
B. price            
B. he                
B. better' and better
B. because          
B. cut up            
C. drew              
C. decision          
C. old              
C. surprise          
C. about            
C. weight            
C. you              
C. slower and slower
C. whether          
C. gave up          
D. saw                  
D. discussion          
D. dear                
D. excitement          
D. among                
D. position            
D. it                  
D. harder and harder    
D. until                
D. sent off            
题型:选择题

Directions: The question below is followed by six choices numbered 260-265. If a choice is correct, mark A in the space provided. If a choice is not correct, mark B. Blacken one circle on your answer sheet for each number.
The nurse is teaching an adolescent with inflammatory bowel disease about treatment with corticosteroids. Which adverse effects are concerns for this client

Osteoporosis.

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农民张大伯因病住院,手术费为a 元,其它费用为b 元,由于参加农村合作医疗,手术费报销85% ,其它费用报销60% ,则张大伯此次住院可报销(    )元。(用代数式表示)

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2010年10月22日,财政部、国家税务总局联合出台了《关于支持和促进就业有关税收政策的问题》决定,已于2011年1月1日起实施。财政部、国家税务总局的做法履行了

①实施经济调节的职能

②健全社会保障体系的职能

③提供公共服务的职能

④协调人民利益关系的职能

A.①②③

B.①②④

C.①③④

D.②③④

题型:选择题

食品出厂必须检验合格。检验不合格的食品绝不允许出厂销售,这就是强制检验。

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