The WDM components making up a WDM system should meet the following requirements .（） A:插入损耗低 Low insertion loss B:具有良好的带通特性 Excellent bandpass property C:温度稳定性好 Performance stability in spite of temperature change D:复用通路数多A number of multiplexing channels E:具有较高的分辨率 High resolution F:几何尺寸小 Small size

The WDM components making up a WDM system should meet the following requirements .（）
A:插入损耗低 Low insertion loss
B:具有良好的带通特性 Excellent bandpass property
C:温度稳定性好 Performance stability in spite of temperature change
D:复用通路数多A number of multiplexing channels
E:具有较高的分辨率 High resolution
F:几何尺寸小 Small size

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