Excuse me, could you tell me ________?

A．where is the nearest park

B．how can 1 get to the park

C．which is the way to the park

D．if is there a park near here

金属矿山选矿厂球磨机常用的给矿器有哪些形式（）。

A、鼓形给矿器

B、螺旋给矿器

C、联合给矿器