题目内容

下列关于铁磁性材料的磁化曲线的有关叙述中,正确的是()

A. 表示外加磁场强度和磁感应强度的变化关系
B. 纵轴代表矫顽力,横轴代表磁感应强度
C. 当外加磁场强度为零时的磁感应强度称为矫顽力
D. 依据起始磁化曲线,可以求出最大磁导率
E. A和D是正确的

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