?? ?????!??1550????25%?????????
????:1?????:?????
2?????????????
3???????
4?????
5?????VX
???2????1?,?,????,??????????1550?25%????????????????300????????2??????????4?????????????????,1250??21???????????
??????,??????????????????????????,????????
??????2???????1???,?,???25%???(??? ????????????) ?????:?????????