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

?????,???,????????????????????????29????,???????????????????????????15???,??????

???????????????,????????,?????????????????????,?????????????????????????,??????????????,?818.6???????????,???????48.8%;??,???????????488.5?????????????,????78.6%?

“?????????????,????????,????????,??????”????????? ?????:??????? ??“??????”????

?? ????:???818.6???,???????????48.8%

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

2???????

3??????V

4????????

5???????150????

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

?????,???,????????????????????????29????,???????????????????????????15???,??????

???????????????,????????,?????????????????????,?????????????????????????,??????????????,?818.6???????????,???????48.8%;??,???????????488.5?????????????,????78.6%?

“?????????????,????????,????????,??????”????????? ?????:???????