????:1???????:??600??

2??????????

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

4?????

5???????

?????????8??????4??????????? (?????????????????????? ????????????????????????????)8????????????????3?,?,???????????????,?????????????,????????????????????

?,?????????????????????????,???8????????????????3???????16???40??????????,???????????????,???,????????????????,?????,??????????????????????????,?????????????

?????,????????????,?????????????????????,???16206?????????,????????????????,?,????????????????????

4???????????,?1620???????????????????????

4??,?1620?????,4?11???,??(????????????????????????)

?????????????:?????????