???“?????????” ??????

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

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

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

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

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