【单选题】听力原文:M: Oh, Janna, you're early! I'm happy you're here early today because I'd like to discuss your attendance for a moment. W: Gee, Dr. Livingston, I'm really sorry about missing yesterday. M: Actual...
A.
About Janna's attending classes
B.
About today's examinations
C.
About the teaching syllabus
D.
About Janna's withdrawing from a school
【简答题】加工中心常用夹具有通用夹具、组合夹具和____。
【单选题】Your English is good ! --_________ .
【简答题】零件储料筒设计要求:直径60,高度150;零件直径45,高度30;料筒位置 120,80;并且创建5只零件,分别着色。 完成零件的对齐操作