An expert system has as its base the collected knowledge of experts,the rules that experts use to arrive at decision.It( ),emulates the knowledge and thinking processes of human experts.A.by chanceB.so farC.in essenceD.in addition

An expert system has as its base the collected knowledge of experts,the rules that experts use to arrive at decision.It( ),emulates the knowledge and thinking processes of human experts.

A.by chance
B.so far
C.in essence
D.in addition

参考解析

解析:in essence“在本质上”。A.by chance“偶然”;B.so far“迄今为止”;D.in addition“此外”。

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