????:1????????????:???????

2???????

3???????????

4???????????

5??????

??????11???????????????????27?? (???????????????????? ?????????)????????????????????27?,??,?????????????????????,???????????

?????,??????????????????????????????(??)?????????????

?20???,????11??????????????????22???????????,???????70???,??6??????????????????????

????????300???,?8.6%?????????????????????8.7%?????????,??????????,??????(???) ???:??????????????????