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

???,??,???

??????,???,???????????0.4???????????????,????????????????0.6???????????????

????????????100???30?????????????,??8????????????????????????????????13??????????????

(????? ???)

?????????????????????????????????:??????? ??“????”????

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

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

2????????

3?????680?24???

4???????

5??????????

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

???,??,???

??????,???,???????????0.4???????????????,????????????????0.6???????????????

????????????100???30?????????????,??8????????????????????????????????13??????????????

(????? ???)

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