      
        2   
1.                   
2.                      
3.                        
4.                        
5.                     
6.                 
7.                      
8.            
         √       ×       2   
1.                  
2.                        
3.                
4.                    
5.                    
6.                         
7.                    
8.                  
                   2   
1.              A       B    
2.              A   B   
3.                A         B       
4.              A    B  
5.              A          
B          
6.                 A       
B       
      8  
 
                                           5500V   
       220V   
                                          1.5V    
                             36V    
                              
                  
                                              
                                             
                    
 
        6   
1.       
2.          
3.            
4.                 