【单选题】求非齐次状态方程的解,采用的方法有积分法和?
【单选题】求非齐次状态方程的解,采用的方法有积分法和?
【多选题】标准差与平均差相同的地方是( )。
C.
都不能直接用来对比两个总体的两个不等的平均数代表性的大小
【单选题】求非齐次状态方程的解,采用的方法有积分法和?
【简答题】求非齐次状态方程的解,采用的方法 和 。(两个答案之间请用顿号“、”隔开,如:A1、A2)
【单选题】I thought he was a warm-hearted and trustworthy person I met him .
【简答题】The companions with ________ my brother associates are friendly and warmhearted.
【单选题】I don't know him, but it is ______ that he is a warm-hearted person.
【简答题】A.Miserly and cold-hearted. B.Penniless but warm-hearted. C.Generous and kind-hearted. D.Rich but indifferent.