选词填空,补全句子。 April July January October 1. In ____________, the weather is cold. 2. In ____________, the weather is warm. 3. In ____________, the weather is hot. 4. In ____________, the weather is cool.
【单选题】已知图 示电路中 V C C = 12V , R C = 3k Ω ,静 态 管 压 降 U CEQ = 6V ; 并在输出端加负载电阻 R L ,其阻值为 3k Ω。选择一个合适的答案填入空内。 当 U i = 1mV 时,若在不失真的条件下,减小 R W ,则输出电压的幅 值 将 ()。