【判断题】when he was young, jobs loved to take apart electronic equipment in the family garage. (t/f)
【判断题】只要电路引入了正反馈,就一定会产生正弦波振荡。( )
ug是( )公司开发的三维设计软件。
【单选题】理想运算放大器的( )。
【单选题】nike, apple, pepsi and ford are famous american _____.
【判断题】串联负反馈使输入电阻增加,并联负反馈使输入电阻减小。
【单选题】there is a _____ island near the coast. it looks beautiful.
【判断题】the active voice is used to describe the action. the passive voice is mainly used to describe the state or the result of the action. (t/f)
【填空题】in english, titles are put before _________, while in chinese, titles are usually put after _________ .
【单选题】______ is not one of the five classics of china.
身体协调性对运动的好处。
【多选题】集成电路与分立元件相比,其优点有( )。
【判断题】整流电路可将正弦电压变为脉动的直流电压。()
【判断题】spellings are not important when the message is to be sent to a stranger.
【判断题】“what does he look like?” is a sentence that we use when we want to know someone’s appearance, while “what is he like?” is a sentence that we use when we want to know someone’s personality.