电热锅正常工作功率为500W,使4.5L的水温度升高54℃需要42min,电热锅的效率是多少.求过程QAQ 我求的Q...电热锅正常工作功率为500W,使4.5L的水温度升高54℃需要42min,电热锅的效率是多少.求过程QAQ
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![电热锅正常工作功率为500W,使4.5L的水温度升高54℃需要42min,电热锅的效率是多少.求过程QAQ 我求的Q...电热锅正常工作功率为500W,使4.5L的水温度升高54℃需要42min,电热锅的效率是多少.求过程QAQ](/uploads/image/z/6392527-7-7.jpg?t=%E7%94%B5%E7%83%AD%E9%94%85%E6%AD%A3%E5%B8%B8%E5%B7%A5%E4%BD%9C%E5%8A%9F%E7%8E%87%E4%B8%BA500W%2C%E4%BD%BF4.5L%E7%9A%84%E6%B0%B4%E6%B8%A9%E5%BA%A6%E5%8D%87%E9%AB%9854%E2%84%83%E9%9C%80%E8%A6%8142min%2C%E7%94%B5%E7%83%AD%E9%94%85%E7%9A%84%E6%95%88%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91.%E6%B1%82%E8%BF%87%E7%A8%8BQAQ+%E6%88%91%E6%B1%82%E7%9A%84Q...%E7%94%B5%E7%83%AD%E9%94%85%E6%AD%A3%E5%B8%B8%E5%B7%A5%E4%BD%9C%E5%8A%9F%E7%8E%87%E4%B8%BA500W%2C%E4%BD%BF4.5L%E7%9A%84%E6%B0%B4%E6%B8%A9%E5%BA%A6%E5%8D%87%E9%AB%9854%E2%84%83%E9%9C%80%E8%A6%8142min%2C%E7%94%B5%E7%83%AD%E9%94%85%E7%9A%84%E6%95%88%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91.%E6%B1%82%E8%BF%87%E7%A8%8BQAQ)
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