Operation Manual

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        
 
.   .              
.   
    (B) 
 (A)    
. 
       
          
     2   1   
.      
     (B)    
.3  
         
. 
         
.
.      .      
.     (B1 + B2)     (B3)    
.  
        
.(B1)   (B2)
         
         
   (B1)      
.     
   (B1 + B2) 
 (B3)    
. 
         
.  
   
.
     
.    
        
.
         
.  
     
.(      )     