相线与零线莫接反

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日前,离休干部老钱告诉笔者,近来他在晚上睡觉前关掉日光灯后,灯管仍然闪烁不停,使他感到不舒服,躺在床上久久不能入睡,而且他怀疑这样是否浪费电。令他不解的是,以前从未发生过这种情况。听了他的叙述,我随即来到他家查看,情况果然如此。我打开开关面板,用电笔一测? Recently, the retired cadre told me that he had recently switched off the fluorescent lamp before going to bed at night, and the lamp was still flashing, making him uncomfortable and lying in bed for a long time unable to sleep, and he doubted whether this would waste electricity. What made him puzzled was that this had never happened before. After listening to his narrative, I immediately came to his house to check, the situation is true. I open the switch panel, a test with a pen?
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