问题 问答题 简答题

什么叫平衡温距?怎样计算?

答案

参考答案:

工业生产中由化学平衡常数所控制的化学反应,反应器出口物料的组成和达到平衡的物料组成之间总是有一定的差距,反映这两个物料组成的平衡温度之差叫做“平衡温距”。

当转化出口气体的组成分析,包括蒸汽已准确地知道时(或已知进口的水碳比和出口干气的组成时),则和压力结合起来,便可算出平衡温距ΔT。

单项选择题
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     Why do I want to go to college? No one has ever asked me    1   a question. But many times I have
asked myself. I have _2   many ideas.    3   important idea is that I want to be a better man.
     Many things make human beings (人类) different   4  or better than or even superior (优越于) to
animals.One of the most important things is   5 . If I fail to receive higher education, my education   6   .
As I want to be a fully    7    man,I must get awell-rounded (全方位的) education, which good colleges
and universities are supposed to   8   . I know one can get educated in many ways, but colleges
and universities are   9   the best places to teach mehow to educate myself. Only when I am
well-educated,will I be a better man and    10   serve the people.
( )1. A. quite      
( )2. A. come up with
( )3. A. Most        
( )4. A. to          
( )5. A. education  
( )6. A. finished    
( )7. A. develop    
( )8. A. improve    
( )9. A. between    
( )10. A. can good  
B. so          
B. agreed with
B. The most    
B. around      
B. weather    
B. don't finish
B. developed  
B. graduate    
B. among      
B. may better  
C. such          
C. caught up with
C. More          
C. between        
C. temperature    
C. will not finish
C. developing    
C. hear          
C. inside        
C. be able to    
D. another          
D. got on well with
D. Much            
D. from            
D. science                         
D. has finished    
D. experience      
D. provide          
D. outside          
D. be able to best