第二章单元测试

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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、对
B、错

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2、DNC is short for direct numerical control.

A、对
B、错

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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

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

A、program
B、geometry
C、data
D、parameter

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

A、NC
B、CNC
C、BNC
D、DNC

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数控技术英语