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问题 单项选择题

离心泵的结构中，叶轮属于（）结构部分。

A、转子

B、密封

C、静子

D、平衡

答案

参考答案：A

完形填空
完型填空。
      It is Saturday today. Mother and Jack are sitting 1._____ the table. They 2._____ their lunch. "
Mum, I don't like 3._____ tomatoes(西红柿). I don't want 4._____ them," says Jack, 5._____ puts
down(放下) the bowl.
     "All right," says mother. "Do not eat 6._____." 
     7._____ lunch, mother and Jack go to work on the farm. In the evening, mother gives Jack a bowl
of 8._____. "Oh, the tomatoes are 9._____. I like them," says Jack. "They are 10._____ same
tomatoes." Says mother with a smile(微笑).
( )1. A. in        
( )2. A. have      
( )3. A. this      
( )4. A. drink      
( )5. A. and        
( )6. A. tomatoes  
( )7. A. At        
( )8. A. meet      
( )9. A. well      
( )10.A. a          

B. at      
B. has    
B. a      
B. eat    
B. but    
B. one    
B. Before  
B. milk    
B. great  
B. an      

C. on          
C. are having  
C. these      
C. to get      
C. then        
C. them        
C. After      
C. cake        
C. bad        
C. the        

D. near(靠近)    
D. is having      
D. those          
D. to eat          
D. so              
D. cakes          
D. Behind          
D. tomatoes        
D. better          
D. /              

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单项选择题 A1/A2型题

女，30岁，哮喘持续2d，动脉血气分析pH7.35，PaCO29.3kPa（70mmHg），PaO26.6kPa（50mmHg），BE＋2mmol/L，HCO3-26mmol/L，其酸碱代谢紊乱的类型为（）.

A．代谢性酸中毒 

B．呼吸性碱中毒 

C．呼吸性碱中毒并代谢性酸中毒 

D．代偿性呼吸性酸中毒 

E．代谢性碱中毒
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