11????

??????????????????????????????????????????????



1?????????????????

2????????????????

3????????

4??????????????????????????????80%?

????????????????????????????????

???70%?????X??????????????????????????????

??????90%????,?????,??,???,??????????,??????,10,?4,?4,2??

????,???????,70%98%???,???,???,????50%,3??70%,1??90%,?10%????????????????

?????,?:1.,?????;2.??,??;3.?,??1/3,???;4.20%???,?,?;5.40?,?????,???,????

????????,?,???,????,?????,??????? ?????