发布时间:2025-01-24 13:17:36
我的方法很简单,先从进户开关查,确定什么颜色线是零线和火线,再把接零线颜色的线作为公用线连在一起,再在开关盒内找到火线,用很细的铜丝短接同颜色线,如果灯亮,就把这两根线接入开关,如果错误或短路细铜线马上烧断,不会损坏任何东西,后面开关盒都可以采用同样方法,
学校某教室有两个开关四盏照明日光灯一个开关控制两盏灯请在图框内画出正确的电路图
2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36抗渗混凝土养护期不少于28d不超过90d其中不超过90天出自哪本标准
2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36 2025-01-24 13:17:36