?? ??20???!????????????!
????:1??????:?????????
2????????????
3?????????
4????????
5???????????
?????????1????4???????????(???? ?)1????4??????,???
??,???,???????????????????,???????????????????????????????????????????????????????????,??????????,???????????
???,????????,??????????????,????,??????????????,?????,?????????????
??????,?????????40??????????,??????????????20????????
??,?,??,???99999??,??????????????36.8?????? ???????????????????:????????