【单选题】下列结构不属于按承重结构材料分类的是()。
【简答题】B 21 型机械冷藏车装运易腐货物42t,货车标记载重量是45t,其计费重量为___t。
【简答题】根据短文内容,从下边的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。 A . The different structure of blue holes. B. Why scientists are interested in blue holes. C. How a blue hole comes into being. D. Blue holes exploring is...
【简答题】根据短文内容, 判断正(T)误(F)。 My name is Jane. I have two brothers. Peter and Mike. We are different (不同的). I like playing computer s very much but the two boys don't like them at all. They like playing sp...
【简答题】装运易腐货物,B21型机械冷藏车标记载重量是45t,其计费重量为____ t。