【简答题】二极管的伏安特性上有一个死区电压。什么是死区电压?硅管和储管的死区电压的典型值约为多少伏?
【多选题】超星智慧笔优势?
A.
一支笔可以让老师的ppt、电子课件通过手写的方式简单、方便的制作
B.
一支笔可以生成高清视频,将老师的教学资源永久保存,让学生可以反复学习
C.
一支笔可以添加多种平台上的教学资源,不再受本地资源的限制
【单选题】Parents take a great interest in the ______ questions raised by their children.
【简答题】Today's children are raised in a way that is totally different from how their parents were___. A,brought up B,brought on C, taken on D,taken up
【单选题】They raised a lot of money and ________ a school for the children in the mountain area.
【简答题】二极管的伏安特性上有一个死区电压。什么是死区电压?硅管和锗管的死区电压的典型值约为多少?
【单选题】A large sum of money has been raised for the ____________ of the poorly-educated children in the
A.
31. A large sum of money has been raised for the ____________ of the poorly-educated children in the mountainous districts. A.profit
【单选题】Today's children are raised in a way that is totally different from how their parents were _____. [ ]
【简答题】She raised the children _____.
【单选题】He raised ______ for the charity to help the poor children.