?????????????12???19??? ?12?????19?,???,???2?,????17?????????????,????

??,?????????,?????????????????????,????

???????????????,????????18??,???????????,???300????

???:??????????????? “????150???”_????

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

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

2???????500?4???

3?????????

4????????????

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

?????????????12???19??? ?12?????19?,???,???2?,????17?????????????,????

??,?????????,?????????????????????,????

???????????????,????????18??,???????????,???300????

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