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

2????????95?

3?92?95?????

4???????

5??????????

???????(?????):????,??,?????????????

????????????????,????1????10??,????????328.8????????,??19.8%???????????????10?????????,????????1188.4??????????????????,?49.4%,??,????????????????339?????????849????,???????????????????????????????????????????????????????????????????,???????????,?????

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

?????????????:???????