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

2????????

3???????

4???????

5???????

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

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

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

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

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

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