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迷糊蟲(chóng)劉新蟲(chóng) (初入文壇)
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[求助]
環(huán)境化學(xué)的兩道英文題,急求答案
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1.Use calculation to explain why the surface water in the natural river or pond systems is often oxidized, while the bottom water is reduced 2.Changes in air quality concentrations for some pollutants do not always match changes in nationwide emissions. For example, if the emissions of SO2 and PM2.5 decrease by 33% and 17%, respectively, but their ambient concentrations decrease by 54% and 8%, respectively. Why didn’t the ambient air quality concentrations change proportionally with nationwide emissions? |
找到一些相關(guān)的精華帖子,希望有用哦~
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