单选题Which device creates an OEO conversion？ （）A amplifierB attenuatorC regeneratorD light emitterE optical switchF optical receiverG fiber-optic cable
单选题
Which device creates an OEO conversion？ （）
A
amplifier
B
attenuator
C
regenerator
D
light emitter
E
optical switch
F
optical receiver
G
fiber-optic cable
参考解析
解析：
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