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

2????????

3???????500?4???

4????????

5??????

??????7?25? ????????????????????,??7??25?????10????:

???????????,7?????25???14??26?????????????14??,????????????????,????????????????(250~500???????????????);???,??????????????????????????????????????????????????????????????????????????,????????????,??????????????????(100~200??);?????30~50??,?80??????,???????????

??:

1??????;

2???,?;

3???????,????;

4?????,??????????????

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