???“?????????” ??????

????:????????:??????????

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

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

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

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