???????????????????

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

??????10?21????????(?????? ??????)10????21???14?,???6.63??“???????????????”???,???????????????16??????????,?77.72??,?35.8%?

21??????14??,?????????????6.63???“???????????????”??????????????,????? ?? ??????????????

??,??????????????????????????,????200????,????2000?????,??????????????

?????????,?,????“??”,????????????????,???“??????????”??,????,???????????????????????????????????????????,?????,???????????,???????????????????????????????????????(??)

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