【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] Throw them out [ B] Set them free [ C] Leave them behind [ D] Sell them out
【简答题】A.Firing them out. B.Tearing them up. C.Dating them. D.Exhausting them.
【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