風傳媒出門多久要關冷氣？專家實測曝「沒超過這時間別關」台電證實：調2按鍵反而更省電
未署名
<![CDATA[<img src="https://image.cache.storm.mg/styles/smg-150x150-fp/s3/media/image/2021/05/27/20210527-121409_U21510_M692193_96d5.jpg?itok=kWsJgLst"...
<![CDATA[<img src="https://image.cache.storm.mg/styles/smg-150x150-fp/s3/media/image/2021/05/27/20210527-121409_U21510_M692193_96d5.jpg?itok=kWsJgLst"...