【单选题】In a multi-generator system, when prime mover fails to provide required speed, the generator may act as a motor, ( ).
A.
drawing power from the system
B.
supplying power to the system
C.
drawing reactive power from the system
D.
supplying reactive power to the system
【单选题】装配图中,同一零件的不同视图,其剖面线的方向和间隔应( )。
【多选题】下列建设工程施工合同中属于无效的有( )
【判断题】IPv4 的IP地址表示方式T通常可以冒分十六进制表示。( )