?? ??5???84???????? ???????
????:1????????????:?????????????
2?????????
3??????????
4?????vx
5????????????
??????????????????????????«???????»,???12??1????,??,???????140?????????????,????????1%?;????140???????????,??1.5%?2%?????????????????????????????????????????
????????????????????????,12??1???5??,?????????????????36.4??,??84????,??2.3??
?????140????????74.1??????????????????????;
?????????140?9.9???????
??????,??1%????????????,?92.4%,??17.4?????????????????4??,4????7.1????????????????????,???
????????????????????,12????????????1?????5???????,??55.3??,?????????24.8%????????????????,???????????????????????????????????62.2%?87.2%?27.5%??????????66.4%?
(?? ?) ???????????????:?????