??“?” ???????2671??????
??????(????????)
??“??????????????” ??????????2671?????
??????2??20?????????????????? (??)?????????20?:?,??????2??19??24??,??2671???????????????????????????(?????????????)3???????
??????,?2??????????????19?24?,????16.9?,?????????64.7?????????????????????????,????,???????????,????????????35%,????20%?
?????,???????????,?????????????????,?????????????????????“????”;????????????,?????????“12+N”????;??????????,??????????????,??? ??:???????????????
??
???:????