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

2?????????

3?????600?????

4???????

5?????vx

????????????2?????????6?????? ??,????????,???????????????????????????????,?????119.39???????????????

?,???X??????????,??,????????????????2??,?????????????,????,??119.39???

????????:??????,??????????????????????????????????????????????????????????(?)??????????,???,???????????????

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