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注重科学技术与社会的关系,是初中科学教育的一个趋势.近几年的中考命题在联系生活贴近生活方面体现得尤为突出.电热器的保温功率与加热功率是中考试题中的热点问题.一方面它考查了学生电学知识的综合应用能力,另一方面也体现了生活、科学、社会的新课标的精髓.但是,在中考命题对这类问题的解答中,学生却出现了许多问题.电热器的保温功率与加热功率涉及的家电有电
Pay attention to the relationship between science and technology and the society, is a trend of junior high school science education.In recent years, the senior high school entrance examination thesis in life is particularly reflected in life.Electric heater insulation power and heating power is a hot issue in the senior high school entrance examination questions. On the other hand, it also reflects the essence of the new curriculum standard of life, science and society.However, there are many problems in the solution of such questions in the senior high school entrance examination questions. Insulation power and heating power appliances involved in electricity