如下哪个表达式同A>8 AND A<18是等价的？Which of the following expressions is equivalent to A > 8 AND A < 18?
A、NOT（A<8）ANDNOT（A>18）;
B、NOT（A<=8）ANDNOT（A>=18）;
C、NOT（A>8ORA<18）;
D、A<8ORA>18
发布时间：2025-08-11 19:22:48
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答案：NOT（A<=8）AND NOT（A>=18）
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