?:??????
??:????????????3??????
???????????????GB????
????:????????????????
?????????18.71?
?????????????????
?????????????????
???????“?????”????:???
??????????????500????80%?
????:????????????????
?????????????:??????
3?29?16?????????
?????????????????????????
???“??”???????:??????
????????????????????
????:???????3716??????????…
????????:??4?????????
??????560?????????2000??
?????????????????????
??????????????????????
???????????:?????????
?????????????:????????
????!?????????????
?????????24400?
??????????????????????
??:?????0.19%????????