?? IFF??????????????
????:1??????:????????????
2??????????
3??????V
4???????
5?????VX
??????????11?????????????????23??????? (?? ???????????????)???????????????????????(IFF)???????????????21??????????????????23???????????????????“?”??????,??????,??????????,???,??
11?????????23????,?????(IFF)?????????21????????????????????????????“??????????”?????????(IFF) ?????????????????????????????????????,?????????5%???????????????????????????????,???????????????????????????
IFF??????,?????????5%????????,????????????????????????????,?????????????,????????????????????,???????????,??????????????
???(IMF)?????????????????????????????,?,????,??????????????????????????
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