磁场削弱开关XKK置于自动位和手动位都不起作用，说明过渡装置GDZ故障。
参考答案：错
现金的流动性强，但（）。
Hello. Is that Mr.White or Mr.Smith speaking? Sorry,（）
A.who are you?
B.don't ask me.
C.I don't know.
D.would you please ring them up this afternoon?
