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

2?????????

3?????95??

4??????????

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

??????????????????6?????15????? ???????,??6????15???18???????????:?????????,6?15?????????????????20?16????20??????,???????????????????????????????????????????????????????????????,?????,??????????(100~200?)???(???????????30~50??,?????70?),???

????????????????????

?:

1?????;

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

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

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

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