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Tnnphuong11a1
2 năm trước
Câu 12: Sơ đồ của mạch điện là hình vẽ biểu diễn mạch điện bằng các kí hiệu của các bộ phận mạch điện. hình vẽ mạch điện thật đúng như kích thước của nó. hình vẽ biểu diễn mạch điện bằng hình ảnh thật của các bộ phận mạch điện. ảnh chụp mạch điện thật. Câu 13: Vật nào dưới đây là vật dẫn điện? Thanh thủy tinh sau khi được cọ xát. Ruột bút chì. Thước nhựa sau khi được cọ xát. Thước gỗ khô.
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