题目内容

如果a和b 为同义词,c用来限制a和b ,正确的布尔逻辑表达式是提示:括号()为强制优先运算符。1,注意空格2,运用优先算符()3,为什么?

A. ( a OR b ) AND c
B. a OR (b AND c)
C. a OR (b OR c)
D. a AND(b OR c)

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当检索词a 、b 、c 为相互限制关系时,查准率最高的布尔逻辑检索式是()分析:相互限制——交叉概念(逻辑“与”)提示: “非”是排斥

A. a AND b AND c
B. a OR b AND c
C. a 或者 b 非 c
D. a 与 b 非 c

There is a yellow small wooden table. (×) →There is a _____ _____ _____ table.(√)

It was made of a green metallic strange material.(×) →It was made of a _____ _____ _____ material.(√)

Categorize the sentences.

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