大型球磨机的处理量大，同时单位功耗也（）
A、大
B、小
C、低
D、高
参考答案：C
-- We’re organizing a party next Saturday, and I’d like you to come.
-- _______! I have another one that day. Thank you just the same.
A．Good luck!
B．What a pity!
C．Never do it again!
D．Well done!
用于消化道溃疡病的散剂，应通过几号筛
A．80目B．90目C．100目D．120目E．200目
