问题
单项选择题
根据CCIT建议光纤的衰减系数使用（）基准测试方法。
A.时域法
B.切断法
C.近场法
D.直接法
答案
参考答案：B
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根据CCIT建议光纤的衰减系数使用（）基准测试方法。
A.时域法
B.切断法
C.近场法
D.直接法
参考答案：B
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