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题目随着人们生活水平的不断提高,家庭厨房使用能源(燃料)的方式日趋多样化.绍兴某小区的居民家庭中有使用电、煤饼和管道煤气等的,其中管道煤气的主要成分是丙烷(C_3H_8)、丁烷(C_4H_(10))和空气(丙烷:丁烷在空气中燃烧的产物是二氧化碳和水),煤的主要元素成分是碳.有关电、管道煤气、煤的热值和价格如下表所示(为方便计算,个别数据作了适当
Topics With the continuous improvement of people’s living standards, the way of using energy (fuel) in home kitchens is becoming more and more diversified. Among residents of a community in Shaoxing, electricity, coal cake, and pipeline gas are used, among which the main component of pipeline gas is propane. (C_3H_8), Butane (C_4H_(10)) and air (Propane: butane products in the air are carbon dioxide and water), the main elemental component of coal is carbon. Electricity, pipeline gas, calorific value of coal and The prices are shown in the table below (for ease of calculation, individual data were appropriate