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

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

3???????

4???????

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

????11?22???????????????? (?? ?????????)?????(IFF)????????????????21?????????????22????????????????????“??????”????????????,?????,????,???????????????????,????????????????

11??????22????????????????,?????????(IFF)???????????21???????????“?????”??? ?????(IFF) ??????

????IFF??????????????????????????????????????????????,??????????????,??????????,?????????????????????????????????????,“???,???????”

?????????????,20?90????????,?????????????????????,???????,????????????“?????,????????????????”???

?????????????????????????????????,???,????????????????????,?????????,?????GDP???????????????,?????

IFF????????????????????????,?????????????????????,???????????,??????,?????????????,“?????????????”

?????????“????:?”???????????,???????????50??????????200???????,??(?????????????????)

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