问题描述:
[单选]
光通道保护(OPCS)的波长分配原则:逆时针方向利用()为工作波长,()为保护波长In terms of the classification principle of wavelength in the optical path protection (OPCS), the anti-clockwise direction uses()as the working wavelength and()as the protection wavelength.
A.偶数波长 奇数波长\ nEven wavelength Odd wavelength
B.奇数波长 偶数波长 \ nOdd wavelength Even wavelength
C.奇数波长 奇数波长\ nOdd wavelength Odd wavelength
D.偶数波长 偶数波长\ nEven wavelength Even wavelength
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上一篇:M600设备不能实现下列哪种保护( )Which of the following protections cannot be implemented by M600?()
下一篇:关于M800 OPCS保护下面那种说法不正确Which of the following statements about the M800 OPCS protection is false?()
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