指出下面四个图中电场线(或等势面)画法有哪些错误．

A．电场线相互平行，但分布不均匀,_______________________ ______________________________________________________;

B．M为放置在匀强电场E中的金属板_______________________ ______________________________________________________.

C．B为静电平衡时的感应导体_____________________________ ______________________________________________________.

D．虚线所示为电势差相等的几个等势面，且________

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