????:1??????:???????400??

2?????

3????????

4???????

5????????????

???2???10??(? ??????)?????????????“??”????

?,????2????????????????????12??????????????????????????????????0.01%?0.1%?0.1%?0.2%?0.3%,?9-30????????

  ?????????

???2????15??????????????????????0.15%?0.25%?0.4%?0.6%?1%?????20-58???????????????

  ????????????

??????????????,?2??10????????????,???????????650?700???(??????)

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