????????????????:???????????

????:????????:???????

??????6????????????????????6????????????????? (????)6???????,????????????“???? ?????????????????????”?,?,???????,???????????

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

?????????? ??????????

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

20??????????????????90????????????????,“??”?,??????1997??,?????“?????????????????????”????????????,2.4???????“??”??????????????????????????,“???????”??

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

?????????? ??????

“????,???????”???,????,????

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

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

??????,?;?????????????“????”?????????????????????????(?????????)

??????????:?????