????:1?????:??????300????

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

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

4????????

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

???????????(?????):???(10????????????????12????????????)??,???,???????????????????????????????????????5?????

?????????????23???,???30%?????,???????????10?????????,????????“???”?

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

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