   
                        
   
                                 
                          16  1998 . N 6-
   
                    
                -  ( )  
                              
   
                 "  "
                - 
        ()        -   
      ( ):
          1.         
         -   () 
        -  ( )  :
   
      -------------------T---------------------------------------------
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      +------------------+---------------------------------------------+
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       ..         -
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       ..          -
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       ..         -
                            -
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                               :                         
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       ..             -
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       ..         , 
                              (-
                        )          
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       ..           - 
                              (
                        )                                
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       ..        
                        ,       
                              (
                        )                                
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       ..       -
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       ..           -
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                        ( )                            
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       ..          
                         ,    ( -
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       ..        "-
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       ..              
                                                    
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       ..           ,
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       ..            
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       ..              - 
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       ..          
                                            
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      L------------------+----------------------------------------------
   
          -              
       -       :   
      ;  :  ,  , -,
      ,   ;
          -    -         
       ,        ,
          ( );
          -   "" ( );
          -   ( );
          -   ( );
          -         -   (
      );
   
          2.               
                 
      .
          3.            :
      :         ;   :    ,
      , -,  ,   
                    
           "  "     -
       (  )             
             
      .
          4.            
                         
               
        .
          5.        
            .
          6.        .
   
                                          .  
                                                     ,
                                               
                                                           ..
   
   
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