单项选择题
A.5%~10%B.1%~2%C.3%~4%D.20%~30%
2.5Gb/s波分系统时PMD指标值为()A.0.8ps/kmB.0.5ps/kmC.0.4ps/kmD.1....
单项选择题2.5Gb/s波分系统时PMD指标值为()
A.0.8ps/kmB.0.5ps/kmC.0.4ps/kmD.1.0ps/km
10Gb/s波分系统时PMD指标值为()A.0.8ps/kmB.0.5ps/kmC.0.4ps/kmD.1.0...
单项选择题10Gb/s波分系统时PMD指标值为()
OMSP保护盘光功率检测范围:()A.-25至20dbB.-35至33dbC.-30至20dbD.-40至30...
单项选择题OMSP保护盘光功率检测范围:()
A.-25至20dbB.-35至33dbC.-30至20dbD.-40至30db