调度自动化系统基本指标中画面数据刷新周期为()
A、3~5S
B、4~8S
C、5~10S
D、6~12S
参考答案:C
All of us want very much to see these amusing movies, especially _______ you referred to just now.
A.any
B.it
C. the one
D.one
在沸点升高较小的蔗糖水溶液蒸发过程中,为了回收二次蒸气的热量,拟采用热泵蒸发技术,应选用()方案。
A.(选取方案二、三、四
B.(选取方案一、二、四
C.(选取方案一、三、四
D.(选取方案一、二、三