??????,???????????!????……

??

???????????????????????????,?????2??15???????????????:?????2??????????4??????,? “???”,???????!

???????,?????,2????12???????18??????????????,?“??”?

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

? | ?????

?????????,????????????

??????

???,?????????????????????,?????

???????????????,??????????0???60??????,????????????????????????????????????????????????,???????????????????????

????,??????????????,??75%?????????

????????????,???

??????,???????????????????????????????????

??????????????????(???18??????)???????????(??2448??)???????????(???????25???,???????23??????)??????????????(???????060??????)??????????????(??624???????????????,??????????????)???????????

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

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

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

?,???????,???????

??????,?????

?,???

?????????,?????,??????1?????3???????????????,?????????

????,??????

?????????,???????????????

?,??????????,?????????

????

??«?????????????????????????????»,?,??????????????

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

?????????????,?????????,??????????????,??;

???????(??????????????)??????5000mg/L~10000mg/L???????????,???????,??????????????30????????,???????????;

??????????????????,????????;

??????????;??????????????

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

??,??;?????????????,?????1000mg/L?????????????????????30???,???????????????????????????

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

????????????,??????500mg/L?????????????30??????;?????????30???????,?,???

?

??(?)??,??????????????30????,??500mg/L??,?????????????30??????,????????

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

????,?????,???????????0.5%??????3???????????;????????????????????0.1%???

????

?????????

???????

??

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

????

??,?????,???????????

?

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

?????????,????,??

?????,??

????????

??????3???????????????????,???????????????????????????,?????

?????????:

??????????

???????

????????

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

???????(???????????????????????)

?????

??????? ?? ???????????? “??????”?????

???:???

?????????

???????????,???????????!????……?????

????????