我国古代四大发明中，涉及到电磁现象应用的发明是( )A．指南

我国古代四大发明中，涉及到电磁现象应用的发明是( )

A．指南针 B．造纸术 C．印刷术 D．火药

答案

解析:指南针利用地磁

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我国古代四大发明中，涉及到电磁现象应用的发明是( )A．指南

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