搜题请搜索小程序“爱下问搜题”
问题 解答题

两条直线如果永不相交，这两条直线一定互相平行．______．（判断对错）

答案

两条直线如果永不相交，这两条直线一定互相平行，说法错误，前提是必须在同一平面内；

故答案为：错误．

单项选择题

沥青混凝土路面的压实层最大厚度不宜大于( )mm，各层应符合压实度及平整度的要求。

A．50

B．80

C．100

D．150
查看答案
单项选择题

An expert system is a software that (41) specialist knowledge-about a particular domain of (42) and is capable of making (43) decisions with in that domain. Although expert systems typically focus on a very narrow domain, they have achieved dramatic success with (44) problems, This has excited wide spread interest outside the research laboratories from which they emerged.
Expert systems have given rise to a set of "knowledge engineering" methods constituting a new approach to design of high performance software system. This new approach represents an (45) change with revolutionary consequences.

A．develops

B．directory

C．effect

D．encapsulates

E．evolutionary

F．experienced

G．expertise

H．intelligent

I．real-life

J．real-time
查看答案