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

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

3????????

4?????????

5?????50????

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

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