智慧树知到《数控技术英语》章节测试答案

第一章单元测试

1、Numerical control is designed to control the operation of a machine tool by a series of coded instructions called a program.。

A.正确

B.错误

正确答案：正确

2、A part program is stored in the form of blocks of information， and each block has the numerical data needed to manufacture a segment of the work-piece.。

A.正确

B.错误

正确答案：正确

3、Like a conventional machine tool， the NC system can’t replace the manual actions of the operator either.。

A.正确

B.错误

正确答案：错误

4、数字模拟转换器的英语全称是

A.Analog Digital Converter

B.Digital Analog Converter

C.Central Processing Unit

D.Basic Revolution Unit

正确答案：Central Processing Unit

5、模拟数字转换器的英语缩写是（）

A.APT

B.DDT

C.DDC

D.ADC

正确答案：ADC

第二章单元测试

1、An important advance in the philosophy of NC of machine tools was the shift toward the use of controller units instead of computers in NC systems.。

A.正确

B.错误

正确答案：错误

2、DNC is short for direct numerical control.。

A.正确

B.错误

正确答案：正确

3、One of the aims of CNC systems is to replace as much of the conventional NC software with hardware as possible.。

A.正确

B.错误

正确答案：错误

4、The part program contains a description of the（）.

A.program

B.geometry

C.data

D.parameter

正确答案：geometry

5、Several machine tools are directly controlled by a central computer， this is the（）.

A.NC

B.CNC

C.BNC

D.DNC

正确答案：DNC

第三章单元测试

1、As NC machines need a large capital investment， we should efficiently use them.。

A.正确

B.错误

正确答案：正确

2、Machining is the manufacturing in which the workers can remove the excess material of a part on a machine tool.。

A.正确

B.错误

正确答案：正确

3、The feed is defined as the distance the cutting tool projects below the original surface of the work-piece.。

A.正确

B.错误

正确答案：错误

4、（）is the relative lateral movement between the tool and the work-piece.

A.The depth of cut

B.The cutting speed

C.The feed

D.The spindle

正确答案：The feed

5、EDM（Electrical Discharge Machining）refers to in Chinese term。

A.电蚀加工

B.电射加工

C.电火花加工

D.电解加工