??????:????????????????
??????????2??????21?? ????21??????????,??????????????????????,??????????????
???,2??????????????????20????????,???????????????2???C-208????????????????????1?????N-22?,??????????????????
??????,??????????????????????,?,??2??????????18??,?1?????????C-208???,???????????????????,218?920??????,??????????,??????,???????????????,??????“?”?????,???????,???????????,??(?)

??
???:????