?? ??500?????????? ??12??????
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2?????????
3????????
4???????
5?????70?????
???,????,????12?????????,???????????12???????????????,????????????????41.5%,??????500?????????????????????????,???????2.97??????,????242???
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1450??
???????????????,??????????1450?,??,?????????????????
???????????????22?????????“????????”,????????????????????????“?????????????”,???41.5%?
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