多项选择题According to the lecture, an appropriate academic speaking style has the following main speaking features. They are _______.A、Formality B、Explicitness C、Simplicity D、Complexity E、Objectivity F、Repetition
单项选择题设传感器TTL输出引脚信号为T，报警开关为K，运行灯为Y，当打开报警开关时，运行灯亮，则运行灯Y逻辑表达式为( )。 A、Y=K B、Y=T C、 D、
