?? ??? ???6%???????????16.5%
????:1??????????:?????????
2????????vx
3?????????????
4???????
5????????
???1?????????8??(??????)??8???????,??????????????,??????????????????????????????????????????????,??????????????????6%???????????????16.5%,??????,???
????????????????????,???????????,???????????,?????????????????,??????,??????
??????,???????????????????????2800????????????,??????????????650???,?3000????,????????,??????;?????,????1400???,????????????;????,???? ????????????:???????????????