【判断题】一个控制系统应注重反应,如果控制数据没有导致行动,那么该系统是无效的。
【单选题】Films of that sort have lost their ______ for children.
【判断题】1957 年至 1980 年称为现代电力电子技术阶段。( )
【单选题】温床是在下列哪类设施的基础上改进的保护地设施
【单选题】Films of this sort have lost their ________ for many Spanish young people.
【简答题】Films of that sort have lost their _____for me.