????:1???????????:????7??

2????????

3????????????

4??????????vx

5???????

??10???????????????31??? (? ??????)???(????????)31???,????3258.9?????,???????39.7%;????????2523.6???,????????????????????????????35.1%?

?????????????,9????306.2????????????,????,???????????????????229.5????,??6.1%??????????????????75%,??????????????????

??????,9??????????,??????????????,?????????????????9????????????????,??????????????,???

?,???,????????????????????9???58.6%,???????????????????????????????4600????????????,????????

?,?????????????????,?????????,??????“???????????”,???????,?????,???

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