【单选题】— Could you help me _____ this Math problem, Lin Tao? It's too hard for me? — OK. Let me have a try. [ ]
【单选题】Perhaps I’m not quite fit for the job, but , please let me have a try.
【单选题】— _______ can help you to relax. —Well, let me have a try. [ ]
【判断题】系统输入某一频率的正弦激励,则稳态输出也是同一频率。