61
   .  ,  . 
   ,    .    
.

 6  5 .
:
-  ().
-  9/:.
-          1~6,  
.
:
-  ().
-  1~6.
:
�� 9/:, 
.

: AMS, 
 5 . 
.  , 
 AMS.
: AMS  2 , 6 
 1~6. 
,  AMS.