?? ????????????? 9?????????
????:1????????????:???????????
2??????
3????????????
4?????????
5???????????
?????6?18?????????????????? ???????,???10????,?????,6????18?14??19??????????14?????,??????????????????????????????????????????????????????????????????????????????????,??,???????????????(100~200??)???(?20~50??,????70????),?????????????
?????:?????????:
1???????????????????????????;
2???,??;
3??????????????,??????????????,???????????;
4????????????,???????????????????
?????:?????