????:1??????????:????????

2???????

3????????vx?????

4??????

5??????????

?????10???????????????????14????????? (? ???????????????????????)???????????????????14??????????????,???4.62????,???????????????????5.1%?

??????,?????,?????????8.6%?13.4%;?????????14.4%?34.3%?????????????????,???????????????????????????????????????

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

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