【单选题】Jack had a fever, he finishing doing his homework yesterday.
【简答题】一线性时不变连续时间系统是稳定系统的充分且必要条件是系统函数的极点位于 S 平面的 。
【简答题】She got married although her parents had not given hertheir _____. A. allowance B. consent C.permit D. appreciation
【单选题】Although they had made careful preparation, unexpected difficulties ________ in the course of their experiments. [ ]
【简答题】Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _____ to his confusion. (A) extended (C) added (B) am...
【单选题】He forgave his wife although she had once had a ______affair with a poet.
【判断题】线性时不变连续时间系统是稳定系统的充分且必要条件是系统函数的极点位于S平面的左半平面。
【单选题】Although he had studied very hard, John had hope of passing the exam.()
【单选题】1 一线性时不变连续因果系统是稳定系统的充分必要条件是系统函数的极点位于s平面的( )。
【单选题】Although he had not studiedvery hard, John had () hope of passing the exam.