【判断题】配合制的选用与 零件的 使用要求无关 。
【简答题】如图电路,电路中的开关闭合很久,t=0时断开开关。求iL(0+)和iL(0-)。
【单选题】What are the guest speakers' jobs?
C.
An envrionmentalist and an ubran planner.
【单选题】如图,开关闭合很久,t=0时断开开关,求u(0+)、uc(0+)和ic(0+)(说明:ic(0+)和uc(0+)是相关联的参考方向)
【单选题】What are the guest speakers' jobs?
C.
An environmentalist and an urban planner.
【简答题】听下面一段对话,回答第1至3题. 1. What are the speakers talking about? A. A high school. B. A French teacher. C. A teaching post. 2. What can we know about the man? A. He can speak French. B. He can speak Chinese. ...