????:1?95?98???????:??????

2????????

3???????????

4???????

5???????????

??2?????????????????????13??? ?????????????????????(CBC)??,??12??,???“???????????”??51????

????????:??

???,“???51??????????,?????(???????)?????,???,?????”

2????????7??????????,?????????????,????“????”,????????

?,????????51??????,???????????????????“?????????”??????

???:????