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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)AND NOT(A>18)

B.NOT(A<=8)AND NOT(A>=18)

C.NOT(A>8 OR A<18)

D.A<8 OR A>18


参考答案和解析
ALTBOUT= ∑ (X3,X2,X1,X0) (0,1,2,3,4,5,6,7)
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