【单选题】A12001:关于软件的概念,下列说法____是正确的。
【简答题】Directions: Watch the video clip and write a summary in no less than 150 words
【判断题】Watch the video and decide whether the following statements are true or false. There is no energy shortage for us.
【单选题】关于软件的概念,下列说法____是正确的
【单选题】TTL反相器输出的高电平会随着输出端电流的增大而( )