发布时间:2025-02-01 01:22:28
在高层建筑给水系统中,目前普遍采用变频调速的泵,变频调速自动供水设备,一般指无负压变频供水设备,根据用户用水量变化来调节水泵转速,使水泵始终工作在高效区,节能节电效果显著。
请问电灯究竟是一直开着比较省电呢还是开一会不用的时候关着比较省电呢
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