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

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

???7??4? ????,??7??????????????4?????????????10????:???????,7????4?14?????????????????5?????????????14????,?????????????????????,???????????,????????????(100~180??)???(?20~40?????,??60?????????),??????

?:????

????:

1????????;

2??????????????????,??;

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

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

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