强行励磁装置在发生事故的情况下，可靠动作可以提高（）保护动作的可靠性。
A.带延时的过流；
B.差动；
C.匝间短路；
D.电流速断；
参考答案：A
He introduced the neighbour _____ he is getting on well to me.
A．of whom
B．with whom
C．about whom
D．to whom
He had _____ homework to do that he had no time to play with us last night. [ ]
A. such much
B. so many
C. such many
D. so much
