???“?????????” ??????

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

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

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

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