?????????“???” ??????

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

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

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

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

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