???“?????????” ??????

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

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

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

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

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