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

2??????95?

3??????

4?????????

5??????

?,??????,?,?15???,??????6????????,????

???8??????????16?????????????18???,?40.89???????,?????8????????15???0.05?,?0.77????????????????????????,?????????????????0.37??????,???0.69??

????????? ??????:???,??????????,???????????????????,???????????????40~80?,???1.5~3???????

??????????????,???20????????

????????? ????????????:?????????????,?,????,???????????????,??????????

??,????????????,????????????????????????????,24?,?? ?????????????:??????