【判断题】外部短路时,由于电流互感器传变的幅值误差和相位误差,使其二次电流和不再等于零。
【简答题】小说《风波》情节的中心线索是_________。作品中矛盾冲突也是由_________引起的。
【简答题】补全对话, 每空一词。 A: Hello! May I ask you some questions? B: Sure. A: What's your name, please? B: Thomas Ruzic. A: You speak English well. How long 1._____ you 2._____ studying English? B: For three years....
【简答题】根据句意及首字母或者图片提示填空。 1. English isn't d_______ to learn, if you have an efficient method. 2. I like v_______ very much, for it is very fun. 3. Playing _______ is indeed really interesting. 4. My sister h...
【单选题】小明用1平方分米的正方形量课桌面的面积,沿着长要摆6个,沿着宽要摆4个,课桌面的面积是 ( )。