【简答题】A.1850. B.1860. C.1861. D.1900.
【单选题】由装配图拆画的零件图中,在标题栏中需要填写零件的材料牌号,零件的材料牌号应当从 ( )得到。
【单选题】由装配图拆画的零件图中,在标题栏中需要填写零件的材料牌号,零件的材料牌号应当从 得到
【简答题】The war that broke out between the North and the South in 1861 is known in history as the American Civil War.