题目

It was what he meant rather than what he said ______ annoyed me.     A. which                        B. as     C. what                         D. that 答案:解析: D 小灯泡L、电容C与一平行金属导轨及导体棒PQ构成如图闭合电路,磁场与导轨所在平面垂直。当导体棒PQ向右运动时,小灯泡电流I的方向以及电容器C极板的带电情况是(    ) A.I从a到b,C上极板带正电 B.I从a到b,C下极板带正电 C.I从b到a,C上极板带正电 D.I从b到a,C下极板带正电
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