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

2???????

3????????

4??????????????

5??????????

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

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

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

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

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

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

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