????:1?????????????:??????a???

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

3?????90????????

4??????????????

5???????

?????6????25? (? ???)25????????(????)??A?????,???,?????????????

????????,?????A???????????????3.03%,????????????????,??????10%,????????????(????????????????10%)?

??,??????????????????????????????,6????24????,??D3??????,???,??80????????,????????????????,???D3???5???????????42%?????????,????????????????

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

????,???????????,?????????2?????????,??????,?????????????,????????????????,????,????,????????,??????????

?????????,?,?????2950???????????,????????????0.44%;???8850????????,?0.83%;????????????1700?,?1.82%?(?????????) ??????:??????