【单选题】A) Kind. B) Patient. C) Considerate. D) Anxious.
【判断题】The gorilla group in the jungle are in a war with other animal kind.()
【简答题】一串联型稳压电路如图所示。已知误差放大器的Au>>1,稳压管的Uz=6V,负载RL=20Ω。 1.试标出误差放大器的同相、反相端; 2.说明电路由哪几部分组成?
【单选题】The penguins are interesting. [ ]