【简答题】A.Checked them out. B.Took notes on them. C.Returned them to the shelves. D.Put them in his book-bag.
【简答题】A.Eat with them. B.Travel with them. C.Dress them in costumes. D.Sleep with them.
【简答题】A.Firing them out. B.Tearing them up. C.Dating them. D.Exhausting them.
【多选题】环境法的目的是通过防治环境污染和生态破坏,协调人类与自然环境之间的关系,保证人类按照自然客观规律特别是生态学规律()人类赖以生存和发展的环境资源,维护生态平衡,保护人体健康和保障经济社会的可持续发展。
【简答题】A.Throw them out B.Set them free C.Leave them behind D.Sell them out
【单选题】两个单输入单输出系统互为对偶系统,他们的传递函数阵关系为