?? ??????????????????????10%??????
????:1????????:??????
2???????
3???????????
4?????????
5?????????
???????????2??2???? ????,??????????????2?????1?8???????????????,??????????????????,??????????????10%??????????,?????????????????????
????????????,??,????,????????,???????
?????????????,????????????????????,??,????????,???,?????????,?????????????????????,?????????
?????:??????????