【简答题】电力系统的无功功率平衡是保证电压质量的基本条件,在电力系统中无功电源包括()及()。
【简答题】A.It would be best to hire someone to do the work. B.They should forget about the work. C.They should put it off till tomorrow. D.They should do the job together.
【多选题】在电力系统中,为了保证(),电力系统中应俱持无功平衡。
【判断题】在电力系统的事故中,电力线路的故障所占不是很大。()
【单选题】_____our team should complete the project quickly, the manager will have to hire additional programming experts.