题目：
WDM的每个波长在光纤中的衰耗不同，衰耗最大的是（）
A、1471nm
B、1511nm
C、1551nm
D、1611nm
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A, B, C, D, E
WDM的每个波长在光纤中的衰耗不同，衰耗最大的是（）A、1471nm B、1511nm
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