— Good evening. Bell Tower Hotel.

— Good evening. ________?

A．What would you like, please

B．Do you still have a room for tonight

C．Is there anything I can do for you

D．Who is that speaking, please

国家电监会《并网发电厂辅助服务管理暂行办法》中，电力调度交易机构应（）公布辅助服务调用、考核及补偿情况。

A.定期

B.不定期

C.定期或不定期

D.按季