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2???????

3???????

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5?300?3????????

???????????????7??28?? (??? ????? ????)??????????,?????????????????????28?????????,????????????????????????????7??????1??????????????????,????????????14.3???????40?????????????????????????

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28??????????????????????????????,??????????,??????????,????????????????????,???,?????????????,??????,????,????????7????1??????????,??????21.6%,???????????????80%?

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???????????????????,??????????????????“??”??????????,????????????144?????,?“???????????????”???,???????????????,“????”????800?“???????????”???,????,10????????,??????????,?4.8??????

???,??????,????????,?6????????????????????,?????????????????10?“??”“????????????”?????

“??????????????,?????????????????????,????,???,????;?????????;??,?????????????????????????????????????,???????????,??,?????????????????????????????????????,????????????”???(??????)

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