第五章单元测试
- Which is the secondary Pollutant?（ ）
- Particulate matter and Ozone are primary pollutants. （ ）
- Acid rain is mainly caused by SO2 and NO2.（ ）
- Chlorofluorocarbon (CFC) is one kind of greenhouse gas. Also, CFC can damage ozone layer.（ ）
- Photochemical smog is a mixture of primary pollutants and secondary pollutants.（ ）
A:HNO3 B:SO2 C:NO D:CO
答案:HNO3
A:错 B:对
A:错 B:对
A:对 B:错
A:错 B:对
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