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

2???????300?500

3?????????

4???????

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

??????,????????????????????????,??????,??????200?????????????,??“?”????“???”,????????

????????,?????????????????,????????,?,???????????????

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

???????????? ?????????????????:?????????2000???2200?????????????????,12????????13????????????????????15%??20%??

?????,??????????????,???????????,?????????????,?????????????,???????,??????????????

???? ??:???????????????,?????????????????,???????????????????

??,???,???,?????????????????

??????????????? ????:????????????????????????,???????,????????????

??,????“?????????????BA”??,??,????????????????15????,??????????7.8%?

?????:???