题目内容

Chang Jae-Hyuk has already missed philosophy class ________ times.

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English is one _________ that students all have to get over in college days.

Chang Jae-Hyuk chit ________ with his friends for a while and then go to one of school cafeterias for lunch.

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

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。