?? ??????? ??28?(?????????)??

????:1???????:??????????v
2?????????95?98?
3???????
4????????????
5???????????
?2????????20????? (??????????)???????????20????????,2?1?,?????,?28????????(???????????????????????)???
2?????????????1???????,?34????????,??,???????,??;?????7.3?,?????????0.8???,2?????????????12?,???????????????????????????

?????????,??,?,????,???22??23???????,??????????????30?????????????????50???,???20?????30??????????????
??,???(?)???????????,??????????????????,??????????????????,??????,?????????,?????????(?)
???:????