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

2???????

3?????

4???????

5????????

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

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

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

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

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

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

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