????:1??????:????Vx

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

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

4???????

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

???????11?????25????????? (?????????)??1??????10???????????,??????????????????17.5%,????9.8????,??????????????????,??????????????

25?,????“?????,??”??????

?????? ??

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

??,????10?,?????????????,??????????????????????????????????????????40%?21.2%?27%;????,???????????37.6%,???????30.2%?15.4%????,???????????6????,?19??,?????????

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

???????????????????????1????????????10?,??20.1%,???????????13.5?????????????????????????,??????30???188.2???

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

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

????????????,“?????????,????????????,????,???”(????????)

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