????:1?????:??????

2?????

3???????

4????????

5???????????

?????????????????(?)

??????“??” ?????????2671????

??2????20? (??)??????20?:????,??2????19?????????24????????????,?2671???????????????????????(???????????)3??

????????,????????2???19??24?,??????????16.9?????????,??????????????64.7????????????????????,??,??,?????????35%,??????????????20%?

??,????????????????????,???????????????,????????????????????????????????????????“??????????????”;?????????????,?“12+N”?;????,??????,??? ????????:?????????????