???“??????” ?????????

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

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

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

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