题目内容
(请给出正确答案)
[判断题]
ONU下行光衰值=OLT发送光功率-ONU接收光功率。()
答案
查看答案
第1题
A.28/28
B.29/29
C.29/32
D.24/24
第3题
A.-20dBm~-14dBm和-24dBm~-10dBm;
B.-20dBm~-14dBm和-31dBm~-14dBm;
C.-20dBm~-14dBm和-19dBm~-10dBm;
D.-19dBm~-10dBm和24dBm~-10dBm
第4题
A.-20dBm~-14dBm和-24dBm~-10dBm;
B.-20dBm~-14dBm和-31dBm~-14dBm;
C.-20dBm~-14dBm和-19dBm~-10dBm;
D.-19dBm~-10dBm和24dBm~-10dBm