In the following basic forms of the transition process, which is stable?( ) A: Attenuation oscillation process and aperiodic divergence process B: Monotone process and equal-amplitude oscillation process C: Divergent oscillation process and equiamplitude oscillation process D: Attenuation oscillation process and monotone process

Only the average thickness can be obtained with quartz crystall oscillation method.

Only the average thickness can be obtained with quartz crystall oscillation method. A: 正确 B: 错误

A necessary condition for oscillation(振荡) is that there be no phase shift(相位移) between the input and output of the feedback network(反馈网路).

Which of the following working modes for slave clocks is the most accurate? A: Tracking synchronization mode B: Hold mode C: Free oscillation mode D: Clock output mode