For lasers with tightly controlled wavelengths, approximately how far apart are the centers of adjacent wavelengths when 100 GHz spacing is used in a DWDM system?（）
- A、0.4 nanometers
- B、0.6 nanometers
- C、0.8 nanometers
- D、1.2 nanometers
- E、1.6 nanometers
正确答案:C
答案解析:有
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