运行中的低压断路器的机构应保持灵活，各部分应保持干净，触头磨损超过原来厚度的()时，应予更换，应定期检查各脱扣器的整定值。

A．1/3

B．2/3

C．1/2

D．1/4

He wanted to know       the English party.[ ]

A. when will we have        

B. when we will have

C. when would we have      

D. when we would have