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9 The major culprits from transportation sources are carbon monoxide (CO), nitrogen oxides (NO and NOx), volatile organic compounds, sulfur dioxide, and hydrocarbons. These molecules react with sunlight, heat, ammonia, moisture, and other compounds to form the noxious vapors, ground level ozone, and particles that comprise ______.
(A) population
(B) smog
(C) toxicities
(D) malaria

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swenyko 高一上 (2019/12/09)
來自運輸來源的主要罪魁禍首是一氧化碳（C...


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Ching Ting 大三下 (2018/07/10)
smog同義字 KK[smɑg] DJ[smɔg] n.名詞 1. 煙霧（= smoke and fog）[U] Black smog reduced visibility to about fifty yards. 黑色的煙霧使能見度降到大約五十碼左右。 同義字 n. 煙霧 fog, smoke, haziness, cloudiness 


9 The major culprits from transportation..-阿摩線上測驗