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

2???????

3???????

4????????

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

???9????5?? ??????????5???????,?,??????????????,?????????????

??,???,??????????????????????????50???????,?????,????????7?????????????,?????????????1200??????????????,???????????????????????????27????42???70?????????????80????????????,????40?2???10??7???42??????????

?????????????????????????????????,?????70%???,???????13????????????

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