?? 5?????????????
????:1??????????????:??????vx
2?????
3??????????
4???????
5??????????
????????6????13?????????? (??????)???????,????????5??,??????????1724??,????18.6????,????14%?13%,?????
????????,??,??,??????,??,??,???????????????,???????????????
???????????????????????????,5????3.37??,?????????????2.8%,???????????????18.05?????????????,?3.0%????????????,????????????????,???????,????,??????????????????
????????????????????,???,???????????????,??,???????????????????? ????????????????:?????