固定偏置共射放大电路出现截止失真,是()。
A、RB偏小
B、Rc偏大
C、Rc偏小
D、RB偏大
参考答案:D
______ he realized it was too late to retum home. [ ]
A. No sooner it grew dark than
B. Hardly did it grow dark when
C. It was not until dark that
D. It was until dark that
中 * * 党的思想路线的核心内容是()。
A.从群众中来,到群众中去
B.坚持马列主义、毛 * * 思想
C.解放思想、实事求是
D.坚持实践的观点