问题 名词解释

信道散布度

答案

参考答案:

表示在已知X后,对于输出Y尚存的平均不确定性;

完形填空
完形填空。
      Mr. Reece worked on a farm. He and his wife grew a lot of things and they had some cows. Every
day they worked hard    1   morning till night. One day, Mr. Reece   2     his wife. "Let's go to
Portsmouth next Sunday . We can    3   a good lunch there and then we can go to the cinema."
      His wife was very happy when she    4   this, because they always ate a lot, and she didn't
   5   cooking three times a day.
      They went to Portsmouth by plane and walked about     6   an hour. Then, when it was twelve
o'clock , they wanted to    7   . They looked around restaurants, they    8   a notice. It reads "Lunch:
12:30 to 2: 30 . 1. 5 pounds."
     "Well, that's   9   . " Mrs. Reece said, "we eat for two hours for 1. 5 pounds here ! This is   10     for
us."
( )1. A. on        
( )2. A. said to  
( )3. A. buy      
( )4. A. listened  
( )5. A. love      
( )6. A. in        
( )7. A. go home  
( )8. A. looked for
( )9. A. great    
( )10. A. the shop
B. in      
B. spoke    
B. have     
B. heard    
B. want    
B. at      
B. take a bus
B. watched  
B. bad      
B. the place
C. from    
C. asked    
C. smell    
C. heard of
C. wish     
C. by      
C. have lunch
C. heard    
C. well    
C. the thing
D. at          
D. told to    
D. cook        
D. hard from  
D. think                         
D. for        
D. have a seat
D. saw        
D. terrible    
D. the news    
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