?? ?:1?????5???????????????????80%
????:1?????????:?????????
2?????????
3???????
4????????
5???????
????????????6??????????????????18????6????????????????????????????????????,???3???????????,?????????????,????,7????????????????????????????????????????4???????,31??(?????????????????????)???????1-5????????????,???????17.5%,??50%;1-5?????????????,?80%,???????,???????????????????,??????????????????????????(???)
??:??????