单选题:An "internal computer" ( Para. 2 ) is ________

题目内容:
An "internal computer" ( Para. 2 ) is ________ A.a computer used exclusively by one company for its own problems
B.a person' s store of knowledge and the ability to process it
C.the most up to date in home computer a company can buy
D.a computer from the post-war era which is very reliable

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答案解析:

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