?? ??????????????????
????:1???????????:?????100?
2????????
3???????300??
4?????????
5????????
?11?27? (??????????????????? ??????)???27?,???????????,??????????,??????????????????????
??????,?????????????????????????????(????????????????????)??????
????????????20???????????????????,???11??22????????,?????????????????????70?????????????????,?6????
???????300?????????,??8.6%?????????????8.7%?????????????????????,??????????,????(???) ???????????????????:???