?? ?????!?????????1550??25%????
????:1?????????:??????
2???????400?????
3????????????
4??????????
5???????????
??2????1??????,?,??????????,???1550????25%?????????????????????300??2?4????,1250?21???
???,??????????????????????????,???????????
??????????????2?1????????,??????????,?25%?????????(???????????? ????) ????????:???????????