???“?????????” ??????

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

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

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

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