????:1??????:??????sn

2??????????

3??????

4?????wx

5??????100???????

???2??4??????????? (?????????? ????????)????????“?????”“?????? ??”???240????,???????4????????,??????????4.6????

??,????31??????????????????????2220???????,????16.6%?16.5%,????2550????240????;????????6???12????,??1.5?,???45%,????8%?

????????????,??????????????????????2100?,??????????????????,??????????????1634???????5.1%,?????160.1??(??????????,????)???????????????42.9%?

????,????,??????????????????????????????????,“?????+”??????????????????,?????,“?”??????????,?????????100%?

?????????,?,?????“??????”??????????,??????“????”????273??,?????????(????)20????????,????(?????) ??:????