【判断题】RLC 并联的交流电路中,当改变电路频率出现谐振时,则此时电路端口的阻抗值最小。
【简答题】With his work completed, the businessman stepped back to his seat, feeling pleased _____ he was a man of action. A. which B. that C. what D. whether
【简答题】There once lived a rich businessman who had a lazy son. The businessman wanted his son to realize the value of labour and said: “Today, I want you to go out and earn something, failing which you won’t...