【单选题】1885年( )造出了一台单杠汽油发动机,并将它装在了一辆三轮车上,这也是世界公认的第一辆汽车。
【单选题】听力原文:M: And now, Mrs. Smith, can you tell us what happened at your apartment when the earthquake ended? W: Oh, it was terrible. I'll never forget it. Well, Jack and I always get up at about a quarter ...
【单选题】听力原文:W: Can you tell us what you like doing in the evening? M: Well, I like music. I listen to a lot of pop music, but best of all I like watching TV. It's much better than reading a book. What is the...
【简答题】Can you tell us what elements are included in a poster?
【单选题】试件粗糙度差,原因是刀架部分有松动或接触精度差和( )。