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

2??????????

3???????

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

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

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

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

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

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

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

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

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

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