【单选题】My father made great efforts to change my ()(反叛的) temper and he finally succeeded.
【单选题】______ the students who took part in the training is 450.
【判断题】在装配图中,可用粗实线表示带传动中的带;用细点画线表示链传动中的链。(T/F)
【单选题】在装配图中,可用________表示链传动中的链.
【简答题】计算下列尺寸的公差值(每小题3分,共9分)