Jae-Hyuk’s first class is philosophy.
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Jae-Hyuk works on his math homework during philosophy class.
A. 对
B. 错
Jaw-Hyuk and his friends meet some boys at the coffee shop.
A. 对
B. 错
Jae-Hyuk goes to bed at 11:00.
A. 对
B. 错
在切削过程中,工件上形成三个不断变化着的表面,分别是()。
A. 待加工表面
B. 定位表面
C. 过渡表面
D. 已加工表面