【单选题】They had _______ wonderful train ride to Chengdu before they went on to _______ Mount Emei by bus.
【简答题】电火花成形加工中,影响加工速度的因素有哪些?
【简答题】电火花成形加工中,影响加工速度的因素有哪些?
【单选题】The price of the bus ticket is much ____ than before.
【判断题】试验中,要求在同质性试验环境下完成,因此试验误差不存在。