（）占地面积小一次性建设投资相对较小，较适于老电厂改造。A、_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

（）占地面积小一次性建设投资相对较小，较适于老电厂改造。

A、石灰石（石灰）/石膏法

B、炉前喷钙-尾部增湿

C、电子束脱硫

D、旋转喷雾干燥法

答案

参考答案：B

选择题

The manager entered the office and was happy to learn that four-fifths of the tickets ______. [ ]

A. was booked

B. had been booked

C. were booked

D. have been booked

单项选择题

平流沉淀池排泥管的直径应为______mm。

A．50～100
B．100～150
C．150～200
D．200～250