在线切割前,确定线电极相对于工件基准面或基准的坐标位置。 ( )是为了让线电极在工件的中心定位,让电极丝与壁相接触。 A 目视法 B 火花法 C 自动法 D 测量法
A.
B.
C.
D.
D
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【简答题】Double taxation refers to income taxes being imposed twice on the same source of earned income. 1st time: The ___________ pays taxes on its profits. 2nd time: The ___________ pay taxes when the corpor...
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