数控技术英语章节测试课后答案2024秋

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:错 B:对
答案:错


2. DNC is short for direct numerical control.


A:错 B:对
答案:对


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


A:对 B:错
答案:错


4. The part program contains a description of the _________.


A:geometry B:data C:parameter D:program
答案:geometry


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


A:NC B:DNC C:CNC D:BNC
答案:DNC

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