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

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

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

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