?? PFOS???:???????“??????????”????
????:1??????:????vx
2????????
3???????????
4???????
5????????
??????,??????????????,???????????????????????????,?????
???????????:??????????,??????????????,???????????????????????????,?????
???????????:????????:1??????:????vx
2????????
3???????????
4???????
5????????
??????,??????????????,???????????????????????????,?????
???????????:????