?? ??????:12??5.2??????? ????????52.5%
????:1?????95?:???????????
2????????
3???????????
4???????????
5?????????????
12??30????????????,???????,?12??(12?1?????????28??????????????)??:????????,????,???????4????????;??????????,??????????
???,???????,12????????,??????????2.9?,????????????????????1~4?;????????1~4???????????,??????5.2?,????????????52.5%???,????????4????????????,???????????????(??)
??????:?????