?? ????:???????????818.6???,???48.8%
????:1?????????100?????:???????
2??????????
3???????
4?????????
5????????
????11??????????????22???????? ??????????22??????,????????????????????????,????
????????????????????,????,?????????????????????29????????,?????????????????????15????????????????????????,?????????
????????????????????,??????,?????,????????????,???,??????????????818.6????,??????48.8%;???,??488.5???,?78.6%?
“?????????????,??????????,?????,????????????????”???????????? ??????????????:????????????