????:1?????300??????:?????????

2????????

3????????

4????????????

5???????

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

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

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

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

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

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

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