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九年义务教育(人教版)初中物理第二册162页在讲到电动机的优点时说:“电动机……对环境没有污染”这种说法是不妥当的。电动机对环境至少存在噪声污染和电磁波污染,其中,噪声污染名列当代社会四大公害之首,电磁波污染也引起了联合国人类环境组织和世界各国的广泛重视。因此,忽视这两种污染对培养学生的环保意识是不利的。考虑到电动机对环境的污染要比热机轻
Nine-year compulsory education (PEP) junior high school physics second volume 162 pages when talking about the advantages of the motor, said: “motor ... ... no pollution to the environment ” This argument is not appropriate. Motors have at least noise pollution and electromagnetic wave pollution to the environment. Among them, noise pollution ranks first among the four major public hazards in contemporary society. Electromagnetic wave pollution has also attracted wide attention from the United Nations Human Environmental Organization and other countries in the world. Therefore, ignoring these two kinds of pollution is unfavorable to students’ awareness of environmental protection. Considering that motor pollution to the environment is lighter than that of heat engines