Particulates may also be classified by their origin: . A: Primary—emitted directly from a process B: Secondary—subsequently formed as a result of a chemical reaction C: Smoke and fly ash from forest fires D: Pollens and other aeroallergens

下列单词或词组翻译错误的是 A: nulear power 核能 B: nitrogen oxides or particulates 氮氧化物或粉尘微粒 C: radioactive wastes 含放射性废弃物 D: nuclear fission 核燃料

The method in which the greenhouse effect takes place is by A: gamma radiation from the earth is absorbed into the atmosphere by particulates B: beta radiation from the Sun is absorbed by water vapor C: ultraviolet radiation from the Sun is absorbed by ozone D: infrared radiation from the Earth's surface is absorbed by multiple gases in the atmosphere E: cosmic radiation from deep space is absorbed by gases in the atmosphere