问题 问答题 简答题

碳氟表面活性剂突出性能是什么?并解释其形成原因?

答案

参考答案:

碳氟表面活性剂的性质

化学稳定性和热稳定性

溶解性

表面活性

临界胶束浓度

完形填空
完形填空。
     Rudi Matt lived in a small village in the Swiss Alps in 1865. What he wanted most in the world was to
climb  1  highest peak (山峰) in the Alps.  2  mother and his uncle, Franz, a mountain guide, wanted him to
stop  3  and start working in a hotel. Rudi would not  4  his dream and secretly got in touch with an English
mountain climber  5  was planning to climb the highest peak.
     Franz was very angry when he found out  6  Rudi had done, but he finally agreed to let Rudi go if he went
climbing, too. Franz also didn't want to see Emil Saxo, a guide from another village, got to the top  7  him.
     Rudi turned out to be a very good climber,  8  as they got close to the top, the Englishman got sick and
couldn't go on farther. Franz  9  behind to take care of him, but Saxo continued, wishing to be the  10  to the
top. Rudi went after Saxo, hoping to  11  him to the top. When they met, Saxo fought with Rudi and fell down
by accident. Saxo was  12  and hurt. Rudi must decide whether to carry Saxo back down to safety or to
continue alone to the top.
     He thought Saxo's life was more  13  than his dream and helped him down. During that time, the
Englishman and Franz continued the climb, and finally  14  reached the top. Later, the villagers  15  knew
Rudi was the real conqueror (征服者) of the mountain.
( )1. A. the    
( )2. A. Rudi   
( )3. A. climbing  
( )4. A. try out  
( )5. A. what   
( )6. A. which   
( )7. A. after   
( )8. A. but    
( )9. A. walked   
( )10. A. first   
( )11. A. take   
( )12. A. helpful  
( )13. A. popular  
( )14. A. he    
( )15. A. both   
B. a     
B. The Rudi's 
B. climb   
B. give up  
B. which   
B. what    
B. behind   
B. so      
B. rested   
B. second   
B. beat    
B. helping  
B. successful 
B. they    
B. none    
C. an    
C. Rudis'  
C. to climb 
C. go over 
C. whom   
C. that   
C. before  
C. or    
C. stayed  
C. third  
C. push   
C. helps  
C. important
C. them   
C. either  
D. /          
D. Rudi's     
D. climbed    
D. work out   
D. who        
D. where      
D. over       
D. for        
D. watched    
D. last       
D. help       
D. helpless   
D. interesting
D. him        
D. all        
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