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

2???????vx

3????????????

4????24????????

5?????????

??????????????????????11??22?????? ???????????????????????22???????????,??????????????,?????,???????????,????????????????????????????????,????????????,??,?????????????????,???????,???

??????,??????????????????????,????0.35?????????????0.6?????????????,???9???????????3.5%???????????????????,????0.31????????????????,??????????????

????????????????,?????,????,????????????????????????????????????????????????????????,???35.75?,??25%,??????????????????????????????????????5.78?,???????13.4%?

?????????????????????,???????????????????????????????????????,??,??,??????????????????????????????1-9?????????????????????,?????????27%,?????????????????“????????????”???????3.2???,????

?????????????,?????????????????????????,???????????,??????8.9???????,??15%,????26.5%,????2.1????????,??????????????

????????,??????????????????????????????,??????????,???? ????:???