【单选题】互感电压的( )端与施感电流的( )构成同名端。
【简答题】现测得放大电路中两只管子两个电极的电流如 图 所示。则图a的晶体管为 型, 电流放大系数 β为: 。图b的晶体管为 型, 电流放大系数 β 为: 。
【单选题】现测得放大电路中晶体管两个电极的电流如图1.7所示。求另一电极的电流和管子的类型。
【简答题】现测得放大电路中某晶体管的两个电极的电流情况如题45图所示。则该晶体管的电流放大系数β为 ,该晶体管类型为 (填PNP/NPN)。
【简答题】Read and choose. 读短文,选出作者和朋友在上海庆祝仲夏节经历的相关信息。 Last weekend was the Mid-summer weekend in Finland. The Mid-summer means that the sun doesn't set at all. It's a big festival to enjoy with good friends to...
【简答题】When I was a boy, I likes swimming very much. One year my two brother and I spent the summer holidays with my uncle and aunt in their house by the sea. It was only twenty meters from the water. Every ...
【判断题】教育学研究的根本任务是研究教育现象。( )
【单选题】那样做的结果, 不是 必然遭遇失败, 就是 必然成为他人的附庸。 . ئۇنداق قىلغاندا، يا مەغلۇبىيەتكە ئۇچرايدىغان ، يا باشقىلارنىڭ بېقىندىسىغا ئايلىنىپ قالىدىغان گەپ
【单选题】现测得放大电路中晶体管两个电极的电流情况如下图,其放大倍数β为()