????:1???????:??????200??

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

3??????????

4????95??

5??????????

????????????7??4??? (??????????? ?)???????????4??????,7??3??8?4?8??????,???,????????????????????????20?????30???????????????0.03??2.77??

4?8??,?????????????????????????10????13??0.03?1.67????;?19.54?,?????????1.04??,??31000?????,???

?,??24????????,????????????????1.1?;??????????????(???????) ????????????:????