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

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

10????????????????????????????????8?,?????????????????(??????????????????? ?????????)??,???????10?????????????11?????????,?30.6%-39%?????????????????,?????????,??????????????????????????

????????????????,??????????200???(??????),??????,?????????????:????????????????????=(??????????×?????????????????????)×(1+?????????????)÷(1-????????)?

???,?,??30.6%??????39%??????38.1%,??34%?39%???

????????????????????1????,?????8????29?????,??????,?????????????????8?????????????????,???

?????????,????1-8???????,?????????13.4??????????????????????????????,???21.2%,???8??????????????,??21.8%,?????

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?????,????,?????????????????,??????????????,??????,??????????,??????????????????????????????????????

WBO?????????????????,?????????,???????????????,???????,?,??????????????????????,???????????????;???,????,???????????? ??:?????????????