【多选题】钢筋混凝土结构用热轧钢筋按屈服强度(MPa)分为()。
【多选题】学前教育机构教学活动的设计需做到
A.
儿童年龄特点与发展实际的分析; 教学活动内容及其重点难点的分析
D.
教学活动环境与材料的考虑; 教学活动方案设计与计划的拟订
【判断题】三相异步电动机的调速方法有:变极调速、变频调速、变转差率调速。
【多选题】钢筋混凝土结构用热轧钢筋按屈服强度(MPa)分为( )。
【单选题】Who is woman in the dialogue?
【单选题】People around Johnny_________.
A.
tried to stop Johnny from going away from home
B.
watched Johnny day and night in turn
C.
talked him out of slipping away from home
D.
kept following him to get him back