???????11???????????????????????23??????????????????? (?????? ????)?????????????(IFF)???21?????????23???????????????????“?????”?????,?,??,?,???????

11????????23???????????,???(IFF)?????????21????????????????????????“????????????????????”???????????????????????????????(IFF) ?????

????????????????,??????????5%????????????????,??????????

IFF??????,????????????5%????????????????????????????????,???????????????????????????????????????????,??????????????????,????,????,???????

???????????????(IMF)??????????????,????,??????????,?????????????

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

????????????????????????:????? “??????”_????

?? IFF??????????????

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

2???????

3???????

4?????vx

5??????

???????11???????????????????????23??????????????????? (?????? ????)?????????????(IFF)???21?????????23???????????????????“?????”?????,?,??,?,???????

11????????23???????????,???(IFF)?????????21????????????????????????“????????????????????”???????????????????????????????(IFF) ?????

????????????????,??????????5%????????????????,??????????

IFF??????,????????????5%????????????????????????????????,???????????????????????????????????????????,??????????????????,????,????,???????

???????????????(IMF)??????????????,????,??????????,?????????????

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

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