第二章单元测试
- A CNC milling machine is usually equipped with ___ milling tool. （ ）
- CMM can detect the ____, ____ and ____ error of the measured work-piece. （ ）
- What does the phrase assembly drawing mean?（ ）
- It is to cut workpiece by ______ file to achieve the required accuracy.（ ）
- What do the common metal machining tools include? （ ）
- What are the basic compositions of hydraulic transmission system ?（ ）
- A machining center is usually equipped with tool library and can change the tools automatically. （ ）
- The transition fit is that there is a gap between each part after assembling, which can produce relative motion.（ ）
- The main disadvantage of pneumatic transmission is oil pollution. （ ）
- Master the usages of basic drawing commands such as orthogonal mode, grid and snapping, object snapping, auto-tracking etc.（ ）
A:1 B:4 C:2 D:3
答案:1
A:size B:all the above C:shape D:position
答案:all the above
A:原理图 B:零件图 C:总成图 D:装配图
答案:装配图
A:using B:used C:to use D:use
答案:using
A:milling machine B:common lathe C:drilling machine D:grinding machine
答案:milling machine###common lathe###drilling machine###grinding machine
A:oil tank B:hydraulic control valve C:hydraulic pump D:hydraulic cylinder.
答案:oil tank###hydraulic control valve###hydraulic pump###hydraulic cylinder.
A:对 B:错
答案:对
A:错 B:对
答案:错
A:错 B:对
答案:错
A:错 B:对
答案:错
