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问题 单项选择题

轮回式热回收器的送排风，当新风侧与排风侧压力差大于（）PA、的压差时，双清洁扇面能有效的阻止回风混入送风中。

A、100

B、150

C、200

D、250

答案

参考答案：C

完形填空
完形填空。
      The old Olympic Games began around the year 776 BC in Creece. Many of the sports
   1   the same as they are now. But then women were not   2   to take part in the games.
     The first Olympic Cames   3   modern times happened in 1896. They were  4   in Greece, where the
games were born. Both the Summer and Winter Olympics are held     5  four years. The Winter Olympics
are usually held two years 6   the Summer Olympics.
      The 24th Summer Olympics were held in 1984in Los Angeles (洛杉矶).The competitors  from he
People's Republic of China     7   the games for the first time. The Chinese competitors  8     many medals
since then.  9   most of the medals were won by women. We hope men will  10  their best to wm more
medals.
( )1. A. did        
( )2. A. agreed      
( )3. A. of          
( )4. A. held        
( )5. A. in          
( )6. A. in front of
( )7. A. took part in
( )8. A. have won    
( )9. A. Sadly      
( )10. A.  work      		B. had        
B. hoped      
B. at          
B. hold        
B. for        
B. before      
B. go to      
B. are winning
B. But        
B. train       		C. looked    
C. prepared  
C. in        
C. begin    
C. each      
C. later    
C. join in  
C. had won  
C. Hardly    
C. compete  		D. were    
D. allowed  
D. on      
D. began    
D. every    
D. earlier  
D. joined  
D. won      
D. Once    
D.  do      
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单项选择题 A1/A2型题

患者，女，23岁，缺失，切端轻度腭向，间隙正常，排列人工牙时应（）

A.按正常弧度排列

B.稍偏唇侧排列

C.牙长轴与中线一致

D.颜色白

E.切端应轻度腭向与协调一致
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