发布时间:2025-02-05 16:00:56
开关不带电合闸时,用万用表电阻档测量空气开关对应的输入、输出端,电阻为零;开关不带电分闸时,用万用表电阻档测量空气开关对应的输入、输出端,电阻接近于无穷大。那就说明空气开关是好的。
康有为流亡海外花巨资购买一个小岛并且将他命名为康有为现状如何
2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56 2025-02-05 16:00:56