???? ????????????0.5?????

????:????500??????:??????

?????9?????24? (????????????? ??????)????24????,???????????????

???????,???,????????????0.5????????

??????8?????????????????,????????????????????,??5???????????????????????17???????????,????????,?????????????????????,???????????,???????????????????????,??,??????

???????????,??????????????????????????????????,?,???,??????????0.5???

???????????????????,????????????????????????,????????5000??,1.5???,??????????1500?????????????????,????,?????????????????????????,?????????,?????????????

????????????????????,???????,????25%??15%?(????????????????????????) ???:???????