单项选择题

3位二进制编码器输入信号为I3时,输出Y2Y1Y0=( )。 A.
100 B.
110 C.
011 D.
101

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There ( ) some bread and peanuts on the plate. ( )

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C．have
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Can yo tell me about your education?
------ I majored _____ accounting.
A、on
B、in
C、at
D、with