皮皮学，免费搜题
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【单选题】
当一个导体带电达到静电平衡时, 下列陈述中正确的是[ ]A.
表面上电荷密度较大处电势较高
B.
表面上曲率较大处电势较高
C.
表面上每点的电势均相等
D.
导体内有电力线穿过
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