－Have you ever seen the film "The Founding of A Republic"?

－______ . However, I hear there are many stars in it.

A．Yes, I’ve seen it once.

B．Yes, I have ever.

C．Not exactly. Is it good?

D．Never. I have no time.

DKZB-400/1140馈电开关中的拉力继电器在真空开关合闸后，监视着与之相连的真空管是否漏气。（）