【判断题】数控车床加工的时候除了会编程,对刀操作,然而在普通车床上控制外圆的尺寸精度主要是通过操作者的经验,而在数控车床上外圆的尺寸精度主要通过程序或系统里的磨耗来控制,所以这就显示出数控车床在控制尺寸精度上的优势。
【单选题】听力原文:M: Hey, Karen, you are not really reading it, are you? W: Pardon? M: The book! You haven't turned the page in the last ten minutes. W: No, Jim, I suppose I haven't. I need to get through it thoug...
A.
She is worried about the seminar.
B.
The man keeps interrupting her.
C.
She finds it too hard.
D.
She lacks interest in it.
【单选题】关于店铺营销工具,以下描述正确的是?()
【单选题】听力原文:M: Hey, Karen. You are not really reading it, are you? W: Pardon? M: The book. You haven't turned the page the last 10 minutes. W: No Jim. I suppose I haven't. I need to get it through though. Bu...
A.
She's worried about the seminar.
B.
The man keeps interrupting her.
C.
She finds it too hard.
D.
She lacks interest in it.
【多选题】在普通车床两顶尖上加工细长光轴,加工后发现有鼓形误差(中间部分直径大,两端部分直径小),其主要原因是( )。
【单选题】听力原文:M: Greg speaking. W: Greg, it's Jane. M: Hey there, how are you? W: I'm good. Listen, I was wondering what you are doing later. M: Hey, I'm at the office. Do you want to call here? A landline is ...
C.
To an art gallery opening.
【多选题】下面关于螺杆均化段的描述正确的是 ( )
【多选题】对石膏线接缝、阴阳角拼缝,必须进行精心修补,达到( )现象。
【单选题】听力原文:M: Hey, Sally! Are you going to stay in that bathroom for the rest of your life? W: Come on, I just got in here not more than five minutes. M: You're kidding me. You've been there for two hours t...
B.
They cherish each other.
C.
The boy care about the girl very much.
D.
The boy jokes the girl.