【多选题】钢材的主要性能包括力学性能和工艺性能。其中力学性能包括( )等。
【单选题】A. Although B. OrC. But D. If
【简答题】00减去73.8的差去除49.我,商是多4?
【单选题】According to Diana Glassman, who is responsible for data protection?
B.
The senior executive responsible for data security.
C.
Everyone working in a company.
【简答题】比136大54的数是______,215比______大49.
【简答题】笔算下面各题. 358÷49 470×56 768÷49.
【简答题】估算: 275×34 902×58 720×45 781×59 945×37 600×89 474×18 270×49.
【简答题】51, 49. 87, 13, 45, 55, 63, ( )
【简答题】科技创新与民生问题密切相关。下列表述错误的是:
【简答题】横线里最大能填几? ______×6<43 8×______<43 ______×5<49.