2024知到网课 数控技术英语智慧树答案

第一章 单元测试

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

A:对
B:错
正确答案:【对】

2、判断题：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:错
B:对
正确答案:【对】

3、判断题：Like a conventional machine tool, the NC system can’t replace the manual actions of the operator either.
A:错
B:对
正确答案:【错】

4、单选题：数字模拟转换器的英语全称是
A:Digital Analog Converter
B:Basic Revolution Unit
C:Central Processing Unit
D:Analog Digital Converter
正确答案:【Central Processing Unit】

5、单选题：模拟数字转换器的英语缩写是________
A:APT
B:ADC
C:DDT
D:DDC
正确答案:【ADC】

第二章 单元测试

1、判断题：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:对
B:错
正确答案:【错】

2、判断题：DNC is short for direct numerical control.
A:错
B:对
正确答案:【对】

3、判断题：One of the aims of CNC systems is to replace as much of the conventional NC software with hardware as possible.
A:错
B:对
正确答案:【错】

4、单选题：The part program contains a description of the _________.
A:parameter
B:program
C:data
D:geometry
正确答案:【geometry】

5、单选题：Several machine tools are directly controlled by a central computer, this is the _________.
A:CNC
B:BNC
C:NC
D:DNC
正确答案:【DNC】

第三章 单元测试

1、判断题：As NC machines need a large capital investment, we should efficiently use them.
A:对
B:错
正确答案:【对】

2、判断题：Machining is the manufacturing in which the workers can remove the excess material of a part on a machine tool.
A:错
B:对
正确答案:【对】

3、判断题：The feed is defined as the distance the cutting tool projects below the original surface of the work-piece.
A:错
B:对
正确答案:【错】

4、单选题：____is the relative lateral movement between the tool and the work-piece.
A: The cutting speed
B: The spindle
C: The feed
D: The depth of cut
正确答案:【 The feed】

5、单选题：EDM（Electrical Discharge Machining）refers to in Chinese term
A: 电火花加工
B: 电解加工
C: 电蚀加工
D: 电射加工
正确答案:【 电火花加工】

第四章 单元测试

1、判断题：Part programmers must have a solid knowledge of machining processes and know a lot of the capabilities of the machine tool.
A:对
B:错
正确答案:【对】

2、判断题：NC part programming includes three tasks: the collection of all data needed, the calculation of the tool path and the arrangement of those given and calculated data.
A:错
B:对
正确答案:【对】

3、判断题：The required data contained in each line of the manuscript includes all machining instructions for transferring the cutting tool from one point to the next one.
A:错
B:对
正确答案:【错】

4、单选题：Programmers should ________ the particular NC machine, its capabilities, and specific codes.
A: decide
B: calculate
C: prove
D: be familiar
正确答案:【 be familiar】

5、单选题：The core of ________, however, is preparation of the manuscript, its conversion into a verified tape, and subsequent editing.
A: computer-aided programming
B: milling machine
C:manual programming
D: drilling machine
正确答案:【manual programming 】

第五章 单元测试

1、判断题：Never attempt to machine a work-piece without first checking the operation of the machine.
A:错
B:对
正确答案:【对】

2、判断题：Before starting a production run, it’s not necessary to perform a trial run.
A:错
B:对
正确答案:【错】

3、判断题：When using a tool compensation function,you should check the direction and amount of compensation.
A:对
B:错
正确答案:【对】

4、单选题：Incorrect operation may lead to ________.
A: serious machine troubles
B: work-piece
C: all right
D: injuries
正确答案:【 all right】

5、单选题：Before operation the machine, you should read the contents in the _______.
A:textbook
B: cell phone
C: warning labels
D: computer
正确答案:【 warning labels】