单项选择题
A.接收灵敏度B.信噪比C.输入抖动容限D.发送光功率
A.1660SMB.1678MCCC.1662SMCD.1642EM
A.1660SMB.1678MCCC.1662SMCD.1650SMC
A.4B.8C.12D.16
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