数控铣床/加工中心的固定循环功能适用于（   ）。
A、曲面形状加工
B、平面形状加工
C、孔系加工
D、内腔加工

单项选择题What can we learn from the conversation? 期末试题21.mp3 A、Its cold in New York now. B、It's very hot in New York now. C、The woman thinks New York and Beijing have similar weather. D、The man is going to visit New York.

单项选择题What is George’s explanation when the boss asks him why they left their last job according to Of Mice and Men? A. The work was done. B. They didn’t like it. C. They were unfairly paid. D. The work was only for one of them.