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【判断题】
自感电动势的大小与线圈的电流变化率成正比。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】装置是用外力迫使运行中机车车辆减速或停车的一种设备。
【简答题】Lily is calling Joe Smith to confirm receipt of the fax. Listen to the conversation and decide whether the following statements are true (T) or false (F)
【简答题】Joe Smith is a sales manager of the American Express Travel Agency. He is calling Lily of Kunming CTS to book a tour. Listen to the conversation and fill in the blanks with what you hear. Lily: Hello,...
【简答题】Joe Smith is a sales manager of the American Express Travel Agency. He is calling Lily of Kunming CTS to book a tour. Listen to the conversation and fill in the blanks with what you hear. Lily: Hello,...
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