【简答题】改错 1 1. He told us about the countries where he had visited.____ 2. Egypt is a country where is famous for its pyramids._____ 3. This is the knife with that the doctor did the operation._____ 4. The...
【单选题】设计蜗杆传动时,通常选择蜗杆材料为 钢 ,蜗轮材料为 ,以减小摩擦力。
【简答题】Where is the country?
【单选题】设计蜗杆传动时,通常选择蜗杆材料为钢,蜗轮材料为 ,以减小摩擦力
【多选题】设计蜗杆传动时,通常选择蜗杆材料为 ,蜗轮材料为 ,以减小摩擦力。
【单选题】设计蜗杆传动时,通常选择蜗杆材料为( ),蜗轮材料为( ),以减小摩擦力。
【简答题】书面表达。 假定你是李华,三年前出国留学,学成回国后发现西安发生了巨大的变化。现在请你用英语给 美国的笔友John发一个e-mail,告诉他这里的变化。你介绍的具体内容包括: 1、风景优美,交通便利; 2、高楼林立,住房改善; 3、生活富裕,外出旅游; 4、汽车、电脑进入千家万户。 5、参观西安,畅游世园。 注意: 1、词数:120词左右(信的开头和结尾已为你写好,不计入词数), 2、不要逐字翻译...
【简答题】改错题。 1. He told us about the countries where he had visited. 2. Egypt is a country where is famous for its pyramids. 3. China is the country which he spent the best part of his life. 4. The days when ...