??????“???” ?????????

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

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

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

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

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