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【单选题】
For an edge-triggered D flip-flop, ( )A.
a change in the state of the flip-flop can occur only at a clock pulse edge
B.
the state that the flip-flop goes to depends on the D input
C.
the output follows the input at each clock pulse
D.
all of these answers
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【单选题】We lost the football match, but we well have won if one of our players hadn't been hurt.
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