单项选择题
A.0⊙0⊙0⊙1 B.1⊕1⊕1⊕1 C.1⊙0⊙0⊙1 D.1⊕1⊙0⊙0
A.Π(0,1,4,7) B.Π(2,3,5,6) C.Π(0,2,4,6) D.Π(1,4,6,7)
A.11101100 B.11100101 C.11001101 D.11101101
A.10000011 B.01111101 C.11100011 D.00000000
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