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

2????????

3????????

4???????

5???????

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

?????????,?????????,????????60%??,?????????????????????????,?????????

?????????,?????????????????1800??????????????6??6?,?6????????

????,?????????????????????,????????,??800??????

????????????????????,???????????????????,?????????,??21???????

6??????????????????15??????,???????,?????,????????????????,??????????????????,??????????74?????85%??

?????????????(6??????????????16??????????)??,??????417??????????,?????????????13???????????????????,??????????????,????? ??????:?????????????????