【简答题】在许用压力角相同的条件下(__)从动件可以得到比(__)从动件更小的凸轮基圆半径或者说,当基圆半径相同时,从动件正确偏置可以(__)凸轮机构的推程压力角。
【简答题】Scotland to Robert Burns is the birth place of _______, and the country of _________.
【单选题】Robert Burns is remembered mainly for his songs written in the ______ dialect on a variety of subjects.
【简答题】在许用压力角相同的条件下()从动件可以得到比对心从动件更小的()或者说,当基圆半径相同时,从动件正确偏置可以减小凸轮机构的推程压力角。
【单选题】(2013·山东济南二模)The poem A Red, Red Rose written by Robert Burns is popular with the Chinese young people, because the poem is easy ________.
【判断题】所谓高级消费,主要是就旅游消费水平和消费结构而言( )
【简答题】所谓高级消费,主要是就旅游消费水平和 而言