???“???????????”???????????,??

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

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

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%,???

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

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

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