多项选择题ZXMP M800 can be applied to a()channel system.

A.8
B.16
C.40
D.80


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1.多项选择题A ZXWM M900 system provides several wavelength stabilizing methods, including ().

A.内置波长反馈方式 Built-in wavelength feedback
B.外置波长反馈方式 External wavelength feedback
C.自动功率控制反馈方式 Automatic power control feedback
D.温度控制反馈方式 Temperature control feedback

3.多项选择题Select boards allowing optical protection from the following options. ()

A.OP
B.OPCS
C.OPMS
D.SWE
E.OPM
F.OMCP

4.单项选择题下面那种技术可改善接收机误判率()

A.FEC编码
B.ERZ调制技术
C.DRA
D.自适应接收电平调制