问题 多项选择题

ZXDU500(V3.0)系统中会导致监控单元告警的故障有()。

A.系统时间与当地时间存在12小时的时差

B.防雷模块受雷击损坏

C.有一个整流模块没有开机运行,但已装上整流模块

D.一个直流配电端端子已插上熔丝,但没有接上负载设备

E.环境检测温度达到55℃。(系统设置为默认值)

答案

参考答案:B, C, E

完形填空
完形填空。

     Life in 30 years will be   1_  because many changes will take place,but what will the changes be?      
     The population is growing fast. There will be    2   people in the world and most of them will live longer than before. Computers will be    3   smaller and more useful,and there will be at least one in every home. And computer studies will be one of the important   4   inschool.    
     People will work fewer hours than they are doing now,and they will have more free time for sports,
watching TV and traveling. Traveling will be much cheaper and  5_  . And many more people will go to
other countries   6_  holidays.    
     There will be changes in our food,too. More land will be used for    7   new towns and houses. Then
there will be less   8_  for cows and sheep,so meat will be more expensive. Maybe people won't eat it
every day.They will eat more vegetables and fruit instead. Maybe people will be healthier.    
     Work in the future will be different,too. Dangerous and hard work will   9_  by robots. Because of
this, many people will not have   10   to do. This will be a problem.

( )1. A. same            
( )2. A. little and little
( )3. A. much            
( )4. A. subject          
( )5. A. easily          
( )6. A. for              
( )7. A. build            
( )8. A. rooms            
( )9. A. done            
( )10.A. works enough     
                      
B. differenc    
B. less and less
B. many          
B. subjects      
B. more easily  
B. with          
B. building      
B. room          
B. do            
B. enough works  
                
C. different      
C. many and many  
C. more          
C. way            
C. easy          
C. at            
C. to build      
C. spaces        
C. be done        
C. work enough    
                  
D. difficulty  
D. more and more
D. most        
D. games        
D. easier      
D. in          
D. builds      
D. sea          
D. be did      
D. enough work  

选择题