????:1????????????:??????????

2??????

3??????

4??????VX

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

???2??????????6??????? (??????????????? ?????)?(??????“?????”)6???????????,?????????????,??????????????(??????)???????????,???????????2011?????????????,???

?????,???????,?????????????????????????????,???1239???????????,??????????????????????????????????????????????????,???????????,???????????

???????,??????????????,??????????????????,??????????,?????????????????,?????????????????40%,???????????70%,?4??,???????????????,????

??,?????????,???,????????????????????,?????????????,??,????????????????,??,?????????(????)??????????,????,??????????????????(?) ??????????????????:??????????????