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【简答题】
已知某区域的电势表为 (V). 该区域的(2,-1,1)点,场强的两个分量为: ____(N/C); ____(N/C).(在稿纸上写出简要计算过程)
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【简答题】从所给的选项中选出5个句子完成下列对话，其中多余2项。 A. Only a little. B. Thank you. C. My name is Li Xiaopeng. D. What about you? E. Where are you from? F. How far is your home from here? G. My parents work there. A: Are you...
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