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

2?????

3????????????

4??????150??

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

????(??????):????????,?????????????????,???

???????????,??????1500????????,???????????????,?????????????????????????????????????????,????????????

???????????,???,??????20%??????????,?????????????????????,??

????6000???????????,?????3000??????????????????,90??????????????????,???????????,??????????????

???????????,???????????????????????????????,???27.6%,???????????????????????????82.1%?70.4%?63.9%???????????54.3%???,?????????????????????

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