题目
第1题
A.protection path signal failure
B.working path signal failure
C.forced switching
D.protection locking
第2题
A.Manual switching
B.Forced switching
C.Clear
D.Rehearsal switching
第3题
A.Protection lock
B.Protection signal invalidatio
C.Clear switching
D.Manual switching
第4题
otection lock.
第5题
A.Protection lock
B.Protection signal invalidatio
C.Forced switching
D.Working signal invalidatio
第6题
A.LOC alarm
B.Mismerge alarm
C.Forced switching command
D.Manual switching command
第8题
A.nworking lock
B.nprotection lock
C.nforced switching
D.nmanual switching
第9题
A.LOC alarm
B.Mismerge alarm
C.Forced switching command (FS)
D.Manual switching command (MS)
第10题
A.nprotection clock
B.nforced switching
C.nmanual switching
D.nclear
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