?? ??????????????????????
????:1????????:??????
2???????
3???????????
4???????????
5??????????
???????????11????????23?????????? (? ?????)??????23????????????(IFF)????????????????????????21?,?????,?????????????????,??????????
11??23????????????,???(IFF)???????????21????????????????? ? ?????????????????????????(IFF)????21????????????????,???????????,???????????????,??????????????,?,????????????????????????,???????????????
??????,?«???????????????»?????????,?????????????????,??,?????????????????,??????????????,???????????????????
?,????????????????????????????,?????????????,????????
????????(IFF)???????????????21??????????????????????????????11??????????????22???23????????,??“?????????????????:??????????”????????????????50????????200??????????????????????????,???????(??????)
????:?????????