一、假設夏日非營業每度電費為 10 元，某家庭於夏日期間每日平均用電如下：⑴100W 燈泡 10 顆，使用 10 小時

問題詳情

一、假設夏日非營業每度電費為 2.10 元，某家庭於夏日期間每日平均用電如下：
⑴100W 燈泡 10 顆，使用 10 小時

參考答案

答案：D
難度：簡單0.819209
統計：A(0),B(21),C(3),D(145),E(0)

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