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家里有个开关能救命，每个月必须按一次，可惜很多人不知道！总开关设置： 入户总线要先安装一个2p的空气开关，这样可以保护整个家里的电路系统。 然后，每个独立的回路再配置空气开关或漏电保护器，这样 ...
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