发布时间:2025-01-23 12:10:42
水表自转可能原因有水表太灵敏,止回阀泄露水倒流,水表后有空气,把每个水龙头的水都排一下试试。安装止回阀可以起到阻止水倒流的作用。止回阀安装在水表前面。
是液晶的有线电视用分量线分量线的作用是什么啊可以使播放更清楚吗
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