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

2??????????

3???????

4???????????

5??????vx

?????(????):????11??????22????,??????,?????????9461??,????????????6.7%??,????????????,????,???

?????????,??,????1.65%,?????9.6%???????,????????????????????????????

??????????,???????,??1245????,???????????????????4%???,???????????????????????????????? ??????????:?????