?? ????????????????500??? ?????????
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????:1????50??????:??????????
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??8????????19???????????????(???)??«?????????»??????????,???????11???26??????????????????30???????18????,??100?????,???????????????500???,????????????
?????,?30%??????????????????,??500??????????60%,?????????????????,????
?,?????????60?,???
???:???,?????????????????????????????????????????,????????????100?????????????????
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