【判断题】集电极电阻RC的作用是将集电极电流的变化转换成电压的变化,实现电压放大。因此,RC的值越大,输出电压越高。
【单选题】The forest fire caused by the volcano is difficult to be ______.
【简答题】I followed her advice and should put down 100 words or so each day.
【单选题】Language consists ________words which we put together into sentences.