【单选题】下列说法错误的是()。
C.
辅助支承每次用完后需将其放松,工件重新定位后,再支承。
D.
浮动支承增加了与工件的接触点数,但只限制一个自由度。
【单选题】自位支承的作用是增加了与工件接触的支承点的数目,但是( )。
【单选题】I don't think that's true. 2.No, wait. That's not right. 3.Uh, I mean no. 4.I guess I was wrong.
【单选题】—You hate Jim,don't you? — .I just think he is a bit annoying,that's all.
【单选题】自位支承,其作用是增加与工件接触的支承点数目,但( )。