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【单选题】
只需在工件的( )划线后,即能明确表示加工界线的称为平面划线。
A.
一个表面上
B.
一个表面上或两个互相平行的表面上
C.
不同表面上
D.
一个表面上或两个互相垂直的表面上
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A.
正确
B.
错误
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A.
正确
B.
错误
【简答题】根据句意或汉语提示填写单词。 1.My sister is good at playing basketball.She is one of the_______ of our school basketball team. 2.After taking exercise, he is in excellent_______ . 3.I went to bed late last night.No...
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