【单选题】I like to go swimming in the summer.
【简答题】I like swimming in ________summer.
【单选题】电力拖动系统存在三大惯性是造成过渡过程的 ( ) 原因 。
【单选题】---I like swimming in winter. ---
【单选题】—I like swimming very much. —Me too, and I go swimming in my free time. A. always B. sometimes C. never D. seldom
【多选题】13 清单描述中关于直行楼梯的工程量清单的计量单位( )