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问题 单项选择题

下列叙述中，不正确的是( )。

A．开环数控机床不带位置检测反馈装置

B．半闭环数控机床的检测装置安装在机床工作台上

C．闭环数控机床的反馈检测装置安装在机床工作台上

D．半闭环数控机床的检测装置安装在电动机或丝杠的端头

答案

参考答案：B

单项选择题

使用软件MSWord打开文件C：\ABC.doc进行处理时，是将（）。

A.内存中的文件输出到显示器

B.内存中的文件读至硬盘并输出到显示器

C.硬盘上的文件读至内存，并输出到显示器

D.硬盘上的文件读至显示器
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单项选择题

During the past years, intelligent technology has evolved (116) three generations. The first was characterized by tools such as prolog and OPS. prolog is a simple backward-chaining environment, and OPS is a simple forward-chaining environment. This led to the second generation of knowledge-engineering environments. Its goal was to model, prototype and construct (117) systems.
All three generations were oriented toward generic (118) and represented generalized implementation environments for the construction of expert systems. knowledge bases and AI applications.
Some of the solution-oriented products are also seamlessly integrated with generic knowledge-engineering environments, permitting end users to add (119) rules and objects, as well as predefined knowledge-based logic to address problems in manufacturing simulation.
Marketplace orientation is rapidly (120) toward solution-oriented intelligent product environments. the fourth generation represents a new line of thinking and ’ develop-merit by commercial fu-ms. will reduce the cost risk and development time associated with problem solving.

A．custom

B．knowledge

C．through

D．problem solving
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