【单选题】用万用表测量二极管的极性,将红、黑表行分别接二极管的两个电极,若测得的电阻值很小(几千欧以下),则黑表笔所接电极为二极管的_____。
【简答题】Yukio is new. He is from 1 . He is fif. He is a nice 2 . He has yellow skin. He has a 3 face with big eyes, a small nose and a small mouth. He is tall. He has 4 legs. 5 hair is black and short. We...
【单选题】为了在倾听中理解说话人的真实意思,可以()
【简答题】听对话和问题,选择正确答案。 ( )1. A. He has a sore throat. B. He has a toothache. C. He has a fever. ( )2. A. His left leg hurt. B. He had sore eyes. C. He had the flu. ( )3. A. More than three hours a...
【单选题】下列选项中没有违背礼仪规范的有_____。
【单选题】用模拟万用表进行测量时,将红、黑表笔分别接在二极管的两端进行第一次测量,再将二极管两个电极对调位置进行第二次测量,若二极管性能良好,则测得的结果是
【简答题】He has much ____as an engineer . So he can build the bridge successfully .( )A. balance B. experience C. suce D. service