【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()。
【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。
【简答题】电力电子技术在电力系统中的应用主要包括______技术和______技术。
【单选题】Should the Vessel fail to comply in any respect with the said description,hire to be __________to the extent necessary to indemnify Charterers for such failure.
【单选题】_____our team should complete the project quickly, the manager will have to hire additional programming experts.