?? ?????????????2.25???????
????:1????????vx:??????
2?????vx
3?????
4???????
5??????????
????12???????????????????19?? (??????????????????????????? ????????????)??????????????12?????19????,??,?????2.25??????????????(????20.7??????????????)????????
?,??????????????????????????????,??????????????
?,??,??????????????????2022?,?51000?????????????
???????????,?????7?????,???????,???????????????????,????
???????????,???????????,?,??????????,2025?????????????????(???) ???????:?????