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问题 单项选择题 A1/A2型题

冷缺血过程中，器官灌洗液灌洗器官的压力应保持在（）

A.5～10cmH2O

B.10～20cmH2O

C.20～40cmH2O

D.40～60cmH2O

E.60～100cmH2O

答案

参考答案：E

解析：用特制的器官灌洗液(0～4℃)快速灌洗器官，尽可能将血液冲洗干净。灌洗的压力保持在60～100cmH2O。压力过低影响灌注效果，过高则会引起器官水肿，损伤器官功能。

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     Young people are often unhappy when they're with their parents. They say that their parents don't 
  1    them. They often think their parents are too strict with them.    2    often find it difficult to win
their children's trust (信任). They seem to forget how they themselves felt when they were     3   , so
they can't quite understand young people now.    
     For example, young people like to do things without much thinking. It's one of their ways to    4    
that they have grown up and they can do    5    any difficult things. And    6    people worry more easily.
Most of them usually    7    what they will do carefully, while young people don' t.
     Young people often make their parents angry by clothes they    8    , the music they enjoy and
something else. But they don't mean to cause any trouble.    9    just feel that in this way they can be
far away from the old people's    10    and they want to make a new culture of their own. And    11    
their parents don't like their music or clothes or their way of speaking, the young people feel very  
    12   , because sometimes they even don't want their parents to say "Yes" to what they do. They
    13    to stay at home alone and do    14    they like.
      I think young people should try to    15    their parents to understand them. If so, they can get on
well with each other.

( )1. A. know     
( )2. A. Teachers 
( )3. A. young    
( )4. A. learn    
( )5. A. for      
( )6. A. older    
( )7. A.  look for
( )8. A. put on  
( )9. A. They    
( )10. A. place  
( )11. A. after   
( )12. A. worried
( )13. A. want   
( )14. A. why     
( )15. A. get     		B. understand 
B. Students   
B. old        
B. see        
B. with                
B. younger      
B. look after
B. wear       
B. We         
B. world      
B. until      
B. tired      
B. remember   
B. where      
B. let         		C. want     
C. Parents   
C. healthy   
C. show      
C. without           
C. more            
C. think about
C. sell        
C. You        
C. family     
C. before     
C. happy      
C. help       
C. when       
C. make      		D. love         
D. Children        
D. free           
D. find           
D. in              
D. fewer          
D. worry about     
D. give       
D. I             
D. room          
D. if             
D. sad            
D. forget      
D. what           
D. tell      
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问答题

恒久公司准备投资某项目，首期投资需150万元，采用直线法折旧，10年后预计残值为30万元，在其10年的使用期中，年收入为40万元，成本为15万元，周转资金需10万元，如果所得税率为40%，资金成本为12%，计算该项目的净现值，并决定是否投资该项目。
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