????:1?????:????????vx

2????????

3?????sz??

4??????????

5???????????

??:???????????????????????????? 7????:????

????(?????????????????????):????????(8??????????18?)?????????,????,??????????,?????,????????????

??????:7????,?????????,????????????6%,??????1.7???

???????????????,???13.3%??????????????????

??????????????????????????????8.5%,??????????2.8??????,???????????????????7.2%??????14.8%,?????????????????????????,?????8.5%?11.7%,???

???????????,????????????????7????????????,??7.3%,????????????????????????????8.5%,??????????67.4%,????????????????0.7??? ?????????????:?????????????