其它控制参数不变,抽余液塔温差控制系统故障时,用侧线抽出罐液位的变化趋势控制侧线抽出

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问题:

其它控制参数不变,抽余液塔温差控制系统故障时,用侧线抽出罐液位的变化趋势控制侧线抽出的原因是()。

A、基于物料平衡

B、防止异构化进料罐抽空

C、防止异构化进料罐满液位

D、基于能量平衡

考点:房地产估价理论与方法二甲苯装置操作工(高级)二甲苯装置操作工(高级)题库
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完形填空。
     In England nobody under the age of eighteen is allowed to drink in a public bar. Mr Brown usually
went to a bar near his house, but he  1  took his son, Tom, because he was too  2  . Then,   3  Tom’s
18th birthday, Mr Brown took him to his usual bar   4   the first time. They drank for half an hour, and
then Mr Brown   5  , “Now, Tom, I will tell you a   6  . You must always be careful
not to drink too much. And how do you know when you’ve had   7  ? Well, I’ll tell you. Can you see
those two lights   8  the end of the bar? When they seem to have become   9   , you’ve had enough and
 10  go home. ”
     "But Dad, ” said Tom, “I can see only one light there !”
( )1. A.always
( )2. A.short  
( )3. A.in    
( )4. A.for    
( )5. A.talked
( )6. A.story  
( )7. A.little
( )8. A.in    
( )9. A.one    
( )10. A.may  
B. often    
B. young    
B. on      
B. to      
B. told    
B. word    
B. much    
B. by      
B. two      
B. can              
C. sometimes
C. poor      
C. at        
C. with      
C. spoke    
C. lesson    
C. some      
C. at        
C. three    
C. will            
D. never  
D. small  
D. by    
D. in    
D. said  
D. truth  
D. enough
D. on    
D. four  
D. should
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风热病邪与燥热病邪致病有何异同?

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如图4-4a所示是某一个时刻J1、J2、J3、J4共4个作业在内存中的分配情况,若此时操作系统先为J5分配5KB空间,接着又为J6分配10KB空间,那么操作系统采用分区管理中的()算法,使得分配内存后的情况如图4-4b所示。

A.最先适应

B.最佳适应

C.最后适应

D.最差适应

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事故是在人们生产、生活活动过程中突然发生的、违反人们意志的、迫使活动暂时或永久停止的、可能造成人员伤害、财产损失或环境污染的必然事件。()

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什么是温度表的灵敏度?决定灵敏度有哪些因素?

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