(x-2x)6展开式中常数项为______.

题型:填空题

问题:

(x-
2
x
)6
展开式中常数项为______.
考点:二项式定理与性质
题型:填空题
完形填空。
     Catherine  was a famous writer of children's  stories.  She lived in a fine old house in  a small town near
London. Often she worked at home, in her quiet      l         long before her books became popular, she had tried to teach    2    how to use a computer.  But sometimes she had to     3      to get some books from the
library or have a meeting. She didn't like being away because she was worried about robbers. So she was very careful. Just before leaving,  she always put a  full cup of coffee on the writing desk,  and left the radio playing to make a robber think someone   4   at home.
     One  day  she came back after a day out ,  and  found that  there was something  different in her house.
There was only a little   5   left in the cup, and the radio was off. But when she looked at her computer, she saw it was   6   , and someone had typed in a new story. She had no idea who had got in, or how, because none of the doors or windows was broken. Then she sat down to  read the story.  To her surprise, it was a very good one. “I’ll use it in my   7   book”, she said     8   .
     The next  month she had to go to London.  She  put  a cup of coffee and  a  plate of sandwiches on the
desk. When she returned, the coffee and the sandwiches had      9      . She ran to the computer. This time
there was only     10   0n the screen.  “IT’S NOT YOUR STORY . IT’S MINE ! ”it said.
( ) 1. A. classes            
( ) 2. A. the students      
( ) 3. A. leave the house    
( ) 4. A. must have          
( ) 5. A. water              
( ) 6. A. on                
( ) 7. A. old                
( ) 8. A. carefully          
( ) 9. A. brought            
( ) 10.A. a piece of paper  
B. lessons    
B. herself    
B. have a rest
B. has        
B. milk        
B. off        
B. first      
B. sadly      
B. broken      
B. a message  
C. classroom      
C. the robber    
C. give a message
C. must          
C. coffee        
C. broken        
C. every          
C. happily        
C. gone          
C. a new story    
D. study          
D. her children  
D. buy a computer
D. must be        
D. tea            
D. over          
D. next          
D. badly          
D. eaten          
D. a letter      
题型:填空题

增加床层厚度,能增强吸啜作用,有利于细粒级分选并得到较纯净的精煤。

题型:填空题

工器具及生产家具购置费的计算方法为( )。

A.设备购置费X定额费率

B.原价+运杂费

C.原价×(1+运杂费率)

D.原价×(1+运杂费率)×(1+损耗率)

题型:填空题

贷款人为有效控制项目融资保险赔款权益,应当要求成为项目所投保商业保险的()保险金请求权人。

A、第一顺位;

B、第二顺位;

C、第三顺位;

D、第四顺位。

题型:填空题

属于资源高效利用型住宅特点的是()

A.太阳能的被动利用

B.低排放

C.对地域绿化的积极保护

D.室内外适当的无障碍化

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