问题 单项选择题

为有效降低输煤皮带间的粉尘浓度,可以采取湿式作业方法;为降低化学试验室有毒物的浓度,可以采取全面通风的方法。这些措施属于职业危害控制措施中的( )措施。

A.工程控制技术
B.集体防护控制
C.组织控制
D.管理控制

答案

参考答案:A

解析: 职业危害控制措施中的工程控制技术措施。
控制作业场所中存在的粉尘,常采用湿式作业或者密闭抽风除尘的工程技术措施,以防止粉尘飞扬,降低作业场所粉尘浓度;对于化学毒物的工程控制,则可以采取全面通风、局部送风和排出气体净化等措施。

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    Most American families are smaller than the families in other countries. Most American
families have one or two   1   and one or two children each.
    Children in the U.S. will   2   their parents' home when they grow up. They usually live 
  3   their parents because they want to find good jobs. They often   4   to their parents or
telephone them. And they often go to visit their parents on   5  .
    Parents usually let their children choose their   6   jobs. Americans think it   7   for young
people to decide on their lives by themselves.
    Children are asked to do some work   8   their house. And in many families, children are 
  9   for doing some housework so that they can learn   10   to make money for their own use.
( )1. A. uncles  
( )2. A. leave    
(     )3. A. near   
(     )4. A. come   
(     )5. A. Monday  
(     )6. A. own    
(     )7. A. bad    
(     )8. A. outside  
(     )9. A. asked   
(     )10. A. what   
B. aunts   
B. reach   
B. far from  
B. drive   
B. weekdays  
B. first   
B. possible   
B. around   
B. made    
B. when     
C. parents  
C. love    
C. next to  
C. move    
C. Friday  
C. last    
C. important  
C. on     
C. paid    
C. where   
D. grandparents                 
D. hate           
D. close to       
D .write          
D. holiday        
D. best           
D. wrong          
D. beside         
D. called         
D. how            
单项选择题 A1/A2型题