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[单选题]
设chr型变量x中的值为 10100111,则表达式()的值是10101001 B.10101000 C.11111101 D.01010101
A.10101001
B.10101000
C.11111101
D.01010101
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A.10101001
B.10101000
C.11111101
D.01010101
第5题
A.x+a <= b-y
B.x > 0 AND y < 0
C.a = b OR x>y
D.x+y > a+b AND NOT (y < b)
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