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【单选题】
误差的敏感方向是指生产加工误差的工艺系统的原始误差处于加工表面的 。A.
法向
B.
水平
C.
垂直
D.
平行
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【简答题】You are a German living in Berlin. One day you’ re walking down the street, minding your own business, when suddenly a stranger comes up with a smile on his face. After stopping you, he holds a smal...
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