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

2???????????

3??????

4?????????95?

5???????V

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

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

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

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

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

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

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