?????汦?????????? ???2??3???????

??????,?????湥??,?????汦??????????

42???????????????????????μ???????--?????????????????С??????????????????????????????Σ???????м??????????????????

??????1???????????????

?????汦?2??3???????

?????汦????????????

?????????????1??2?????17.4%???????????????????????????????????2??3?????11.6%??12.5%?????????????????????????????????Щ???????????????????????????????????

??????115??2????????14??3????????????12.2%

???????438??2????????59??3????????????13.5%

???????24??2????????3??3????????????12.5%

???????????????????????2??3????????12--13%?????????????????????????????

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0 0 ???????????????