【简答题】听材料,回答问题。 1. Mr. Brown worked in an office ______. A. in a small town B. in a small house C. far from the station D. in London 2. John went to London to ______. A. see Mr. Brown B. work C. ask the way...
【简答题】机构中的构件可分为三类:固定构件(机架)、原动件(主动件)、 件。
【判断题】机构中的构件可分为两类:原动件和从动件。
【单选题】—________ the small town is! — Yes, it is more beautiful than ________ town that I visited last year.