????:1????150????:??????

2???????

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

4????????

5???????

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

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

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

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

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

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

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