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dong04bg
2 năm trước
Câu 1: Aptomat thuộc loại thiết bị điện nào? A. Thiết bị lấy điện B. Thiết bị bảo vệ C. Thiết bị đóng-cắt D. Vừa là thiết bị đóng ngắt vừa là thiết bị bảo vệ Câu 2: Chọn những thiết bị, đồ dùng điện phù hợp với mạng điện trong nhà 220V? A Nồi cơm điện 110V-600W B. Quạt điện 110V-30W C. Công tắc điện 250V-5A D. Bóng điện 12V-3W
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