下列传动方式中,具有瞬时恒定传动比的是()A.带传动 B.链传动 C.齿轮传动 D. 发布时间:2017-04-22 14:44 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列传动方式中,具有瞬时恒定传动比的是()A.带传动B.链传动C.齿轮传动D.摩擦轮传动
题型:单项选择题 给下列的问句选择合适的答语。( ) 1. May I go shopping?( ) 2. How far is it from Shijiazhuang to Beijing?( ) 3. How far is it from Beijing to New York?( ) 4. Is a bicycle faster or slower than a train?( ) 5. When do you arrive in shanghai?( ) 6. What is one thousand and twenty-seven?A. Yes, you may.B. On May third.C. 278 kilometres.D. I don't know.E. It's 10: 27.F. It's slower than a train. 查看答案
题型:单项选择题 保险费率的厘定要遵循一些原则,要求保险费率在短期内应该保持稳定,在长期内根据实际情况的变动进行调整的原则属于( )。A.稳定性原则 B.合理性原则C.公平性原则 D.弹性原则 查看答案