题目内容

Chang Jae-Hyuk finds his _______ sitting in the corner, but he doesn't have the guts to speak to her.

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给对称形体工件划线，以对称中心平面的两个基准面精加工后，按照这两个基准面之间的（）尺寸及对称要素的要求尺寸计算得出。

由于凸凹体的设计基准是对称中心线，而测量基准为外形，因此必须采用（）方法来控制有关工艺尺寸。

Choose the correct event order.①Jae-Hyuk is tired when he arrives home.②Jae-Hyuk leaves for school without eating breakfast.③Jae-Hyuk goes to the club room after his English class.④The professor arrives in class after Jae-Hyuk.⑤Jae-Hyuk meets a girl he likes.

A. ①④③②⑤
B. ④①⑤③②
C. ②④③⑤①
D. ④②①⑤③

单燕尾角度尺寸测量，一般采取千分尺与（）（辅助测量工具）相配合进行测量。