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