问题描述:
[单选]
电荷是产生电场的源,电流是产生磁场的源。
A.正确
B.错误
参考答案:查看无
答案解析:无
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答案解析:无
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下一篇:在元宵节期间,还有舞龙、拔河、扭秧歌等文化体育活动。 A.Lantern Festival is also marked by sports and other entertainments, such as tug-of-war, Dragon Dance, Lion Dance, Yanko Dance. B.The Lantern Festival is also marked by sports and other entertainments, such as the tug-of-war, the Dragon Dance, the Lion Dance, and the Yanko Dance.
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