【判断题】射极输出器没有电压放大作用,但有电流放大和功率放大作用
【单选题】下列血浆蛋白质中可作为机体营养不良指标的是
【单选题】下列血浆蛋白质中可作为机体营养不良指标的是
【判断题】射极输出器没有电压放大作用,所以没有功率放大作用。
【单选题】We suspected that he was the murderer even before we were told.
C.
believed to be unlikely
【简答题】射极输出器有 放大作用,没有电压放大作用。
【单选题】we suspected that he was the murderer even before we were told.
B.
believed it to be likely
C.
believed it to be unlikely