????:1???????????:???????

2???????????

3?????????

4??????

5???????

??2????????13???? (??????????? ??)??13??????????,?????????????????????,??????????????

???????,???????????????,??????10%??????????????,??2000??????????(??????????????)(????????????????,????)???1?????????,?????10?;??1????,???????????10?,?????????????10??????????,???????100?????????????????????,?3????????????????????,????????????????1000??????

????????,??,????,?????????????????,??;????????3??,????????50%???;?????,??????????????

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