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

2???????

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

4???t???????

5?????????????

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

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

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

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