【单选题】下列关于科目名称和科目代码关系的表述中,正确的是( )
【简答题】A.The map is not good enough. B.The map is too old. C.She wouldn't like to help the man. D.The man can find it himself.
【简答题】阅读理解。 An old man lived alone in his old house. He hardly ever came out. He wouldn't communicate with others. One day, a little boy selling magazines knocked at the man's door. The door slowly opened. ...
【单选题】关于电力系统的潮流调整控制,以下正确的是( )。
B.
多电压等级环网中,改变变压器变比主要改变网络中有功功率分布;
C.
环形网络串联横向附加串联加压器主要改变电力网有功功率分布;
D.
环形网络串联横向附加串联加压器主要改变电力网无功功率分布;
【判断题】超高压、特高压输电线路的电感是决定电网潮流,即有功和无功分布的主要因素,影响输电线路的电压降落和电力系统的稳定性能。()
【单选题】易伤阳气,易袭阴位,具有重浊特性的邪气是: