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??? ????? ????????????????????????????????????????????????????????????????????????????????????B-????????????????????????????????????????????????????????????? ??? ?????? ???????????????????????????????????????????????????????? 130-50? 2?????????????? 3???????? 4???@ 5????? 6????????? 7??????????? 8????90%???1/3?? 9????? ? ????????????????????BCTX?? 1B B??????????50%-70%????????????????????????????? 2CT ??????????????CT??CT??50%-60%CT???????????CT??????? 3X?? X??PTCERCPTCG??????????PTCERCPTCG??80%...