同种电荷相互排斥,异种电荷相互吸引
因为D带正电,B和D互相排斥.所以B带正电.
C和B互相吸引,所以C带负电,因为A和C互相排斥,所以A带负电.
选B
四个带电体,已知D带正电,A和C互相排斥,C和B互相吸引,而B和D互相排斥,所以（ ）.
四个带电体,已知D带正电,A和C互相排斥,C和B互相吸引,而B和D互相排斥,所以（ ）.
A AC带正电、B带负电.B A、C带负电、B带正电 C BC带正电、A带负电
A AC带正电、B带负电.B A、C带负电、B带正电 C BC带正电、A带负电
物理人气：710 ℃时间：2020-02-04 22:22:37
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