??????????????????????
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??
??????̧?????????????
???7??????????????7????????8%10%????????8%????5%????????????????????????
??????????7???????
?????????????7???????7??????3032.8???70.3%?3.6
??
??????????ۧ????????1??1??????????????????????
??????????????????????????
?????????
????????????3900???4500????????????????????????????4.3????2.1?
?????30%50%????1????????????????????????????
???????????????????????????
?
??