问题 问答题 简答题

煤矿井下安全三级紧急避险系统分类如下:

答案

参考答案:

第一级:以个人防护为重点,配备自救器、便携式瓦检仪或报警矿灯等防护装备,为灾变发生后人员快速脱离灾害影响范围或达到安全避灾地点提供支持。

第二级:在工作面附近和局部区域设置可移动式避难舱或建设临时避难硐室,配备一定数量的食物、饮水和供氧系统,使遇险人员能就近快速进入安全环境紧急避险。

第三级:在采区上下山附近或井底车场设置固定式避难所,形成为避难所内持续输送氧气、水和一定量的食物的系统,实现通讯、环境监测等功能,为整个采区或矿井避灾人员提供应急避难空间。

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       John's family   1  On vacation next month. They   2   go to the beach. John is going on Monday
and   3  On Thursday. He   4   there for less than a week.
       John's father   5   from Monday to Thursday.  6   he can't go with John. He is going on vacation on
Friday and getting back on Sunday.
       John's mother   7   a housewife. She   8   a lot of time. She is going on vacation on Monday. She's
staying   9   and coming back on Sunday. They   10   a good time at the beach.
( )1. A. go          
( )2. A. want to    
( )3. A. coming home
( )4. A. stay        
( )5. A. works      
( )6. A. But        
( )7. A. am          
( )8. A. has        
( )9. A. all week    
( )10. A. had        
B. are going    
B. decide        
B. come home    
B. stays        
B. goes          
B. Or            
B. be            
B. have          
B. week          
B. are having    
C. going          
C. forget        
C. come to home  
C. is staying    
C .leaves        
C. So            
C. are            
C. doesn't have  
C. week all      
C. having        
D. goes                
D. hope                
D. coming to home      
D. stayed              
D. studies              
D. And                  
D. is                  
D. doesn't has         
D. all a week          
D. have                
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