 ,  , 
      . gd 
----------------------------------------------------------------------

    

- ,   ..,. 
-  ., ,. 
*gd,16,2000,10,04*a
*gd,16,2000,20,04*a
*gd,16,2000,30,04*a
*gd,16,2000,40,04*a
*gd,16,2000,50,04*a