A.對時精度±1μs,守時精度±4μs B.對時精度±4μs,守時精度±10μs C.對時精度±10μs,守時精度±4μs D.對時精度±1μs,守時精度±10μs
A.1 B.2 C.5 D.10
A.單模,1310 B.單模,850 C.多模,1310 D.多模,850