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

2???????

3???????

4???????

5????????

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

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

????????????????????????????(IFF)?????21?????????????????????????????????????,????????,??????????????,?????,?????????????????,????????????????,???????

??????,?«?»?????????,??,???????????????,???????????????,??????,?????????????

?,??????????,????????????????????????????,???????????????????

?????(IFF)?????????????????????21??11??????????????????????????????22??????23????????,????“????????????????????????:????????”?????????50??????200???????????????????,?????(???)

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