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问题 填空题

点（2，0）到直线y=x-1的距离为 ______．

答案

直线y=x-1即 x-y-1=0，点（2，0）到直线y=x-1的距离即为点（2，0）到 x-y-1=0 的距离，

由点到直线的距离公式得

|2-0-1|
2
=
2
2
，故答案为
2
2
．

单项选择题 A1/A2型题

足下垂伴足内翻最多见于（）

A.脑外伤患者

B.脑卒中偏瘫患者

C.小儿麻痹后遗症患者

D.高位脊髓损伤患者

E.低位脊髓损伤患者
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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.

A. custom B. knowledge C. through D. problem solving

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.
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