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????????,??“?”?20?????(???)??????????????,????20??,??????,??????????????????????????????????????????(??) ?????????:???????? ??“???????”????

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????:1????????:????98?

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?????????????2????????????18??? (??????????????? ?????????)???18??????,??????????,????“??”,????????????,??“???”???,???,??????

????????“?”?????????????????????,?????????????????????,????????,??50???????????(??????????????)?????????????,?????500????????????????????????????,?1-3??,?????????????0.3%-0.5%/????????????????????????????,?????????????,???????????????,??,?????????????????????,?????

?,“????????”?????????????????????????????????????,????????,????????,????????????????20???????(?????)???0.3%/??,20????????????0.5%/????????????????????????????????????????????

????????,??“?”?20?????(???)??????????????,????20??,??????,??????????????????????????????????????????(??) ?????????:????????