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如何知道家中是否停电？ - V2EX
source link: https://www.v2ex.com/t/424232
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问与答 - @dream7758522 - 今天家里停电了，突然想着有没有什么方法可以知道？高层爬楼梯太痛苦了，而且如果停电了晚餐就在外面解决。进入小区后发现停电了，还要折返出去吃饭要求:简单方便想了几个方法，1 是开个电脑，运行心跳脚
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