대기환경기사 2021년 1회 10번
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문제[edit | edit source]
10. 2차 대기오염물질에 해당하는 것은?
- ① H2S
- ② H2O2
- ③ NH3
- ④ (CH3)2S
풀어보기[edit | edit source]
정답[edit | edit source]
- 2번