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

2???????????

3???????

4?????

5??????????????

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

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

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

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

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

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

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