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

2???????

3????????

4???????

5?????????????

?????????(??????????):????????????????????,?????

???????????,???????????????,??????????8??????????,??????????????????????????????????????????????????????,???7???????114???

??????????????????,????,????????????????647.81?????????????????????????????????????????8??????????????????30%40%,????,?????????????????????16??????????????????,????????????100?????????????????????????,???,?????????,???????????21????????????????51???????????????,???????????,????450????????????????????????????,?????500?????????????????????????

???????????????,?????,??1??????,??????

????,??????????????????????,????,???50%,??35%?

????????,????????????,???????“????+”?????????????,????????????????????????????????

?????????,???????????????16.4%???????????????????38.1%?34.6%??13.2%? ???????:????????