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

2?????vx

3???????

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

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

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

??????????????,??????????????10?????????1???????15?,?????????????788.2??,?????26.6%,????7???5A?10.89?,???40.65%?

???? ???????400????????????

????????,???????????4??,????638?A?????????195??????45??????????84???????????????402.25???

?????,???????????2900??629??????????,“??+”?????????????

????? ???4A???????????????5.1%

???,???????,???????????4A???????????262.5????,???5.1%;????????100??????????????????26.9??????????,??????????????7.8%;?????75????????????28.4??????,????3.8%?

??????????????“?”?,???????????????3000?????????

???????????? ???????16%

????,10???????????????????????1?????????,???????320?,?16%?

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

????? ?????????????????????200%

???????????????,?????????????:??????????????????????????????????????????????????????????????????,????????????200%????????

????????? ????????????5.5????

10??????1?????????????,??????????5.5???????????????????????,10?????2?????????10??????6????,???????,????????????

???50????????????,??????“???”????????????,??????????230?????(??????????????????????),??50?????????????,??????????

???????? ???

????75???????????????,“???”“75????????????????”“?????”????????????,?????

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

???????,3050?,???????47%,?,???????43%?????????,????6??????????

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

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