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提问人:网友w*****2 发布时间:2022年5月1日 23:57
[单选题]

掺铒光纤放大器的工作波长范围是( )。

A. 1310nm ~ 1350nmB. 850nm ~ 890nmC. 1510nm ~ 1540nmD. 1530nm ~ 1570nm

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