????:1??????????:????98??

2??????

3???????????

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5??????????????

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

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

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

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