问题 问答题 简答题

什麽是燃烧带?应响燃烧的因素?

答案

参考答案:

⑴风口前燃料燃烧的区域称为燃烧带。在此区域有自由氧和CO2存在,可以氧化C,FE。MN等,故又称氧化带。

⑵因素:

①鼓风动能;

②燃烧反应速度,反应速度快则燃烧带短;

③料柱透气性。

解答题
完形填空
完形填空。
     I don't know the city at    1   and what is more, I couldn't speak a word of the language. After having
spent my first day sightseeing    2    the town-center, I decided to lose my    3    deliberately (深思的) on
my second    4  , since I believed    5   this was the surest way of getting to know my way around. I got
on the first bus that    6   and descended (下来) some thirty minutes later in what must have been a suburb.
     The first two hours passed pleasantly    7   . I discovered mysterious little bookshops in back    8    and
finally arrived at a marketplace    9   I stopped and had a coffee in an open-air cafe. Then I decided to get 
  10   to my hotel for lunch.
      Ham was the eighty-sixth living creature shot into the space by U.S. scientists. Before him, rockets
had taken up sixty-six mice, two frogs, two rabbits, eleven dogs,    11   four monkeys. Even the mice
were   12   in small space suits. All were fitted   13   recording machines that told how their journeys in 
  14   bad affected them.
      But Ham's   15   was the most important. The chimpanzee's (黑猩猩) would tell the most   16   how a
human astronaunt might react in space. And Ham had been especially trained to   17   all the actions that
would make a   18   of how a clever creature would   19   in space. He had been trained for all the things
he might   12   to on the flight-dimlight (昏暗的光线), great noise, greater speed.
(      ) 1. A:last  
(      ) 2. A:on    
(      ) 3. A:wallet
(      ) 4. A:day   
(      ) 5. A:what  
(      ) 6. A:passed
(      ) 7. A:yet   
(      ) 8. A:streets
(      ) 9. A:which 
(      ) 10. A:off   
(      ) 11. A:with  
(      ) 12. A:put   
(      ) 13. A:with  
(      ) 14. A:suit  
(      ) 15. A:flight
(      ) 16. A:why   
(      ) 17. A:form  
(      ) 18. A:record
(      ) 19. A:eat   
(      ) 20. A:react 
B:present   
B:in        
B:way       
B:city    
B:which     
B:past    
B:also    
B:city      
B:where   
B:down    
B:by        
B:dressed 
B:in      
B:coat      
B:suit    
B:about   
B:set   
B:reaction  
B:behave    
B:act     
C:all    
C:for    
C:book   
C:time   
C:where  
C:carried
C:too    
C:around 
C:when   
C:back   
C:without
C:wear   
C:for    
C:space  
C:machine
C:in     
C:perform
C:behave 
C:dance  
C:dress  
D:first        
D:before       
D:bag          
D:town-center  
D:that         
D:went         
D:enough       
D:yard         
D:how          
D:out          
D:and          
D:sent         
D:by           
D:ship         
D:experience   
D:for          
D:learn        
D:space        
D:go            
D:count