????????????

????:??????????:??????????

?7?1? (??????)?????7???1??????9????????24??????????????????????????????????????????,????????????????????????????????????????????(120??????~160??),??(??40??????????????~60??,?????????????80??)???(8?,????????10???)????

6????30????7??7???????1???7?,???????????????????????????????772????50????????????,?22.1%;67??100??,??1.9%;??174.1???

????????????,7??1??,??,??,???(??) ????????????:???