A.發(fā)散振蕩 B.單調(diào)衰減 C.衰減振蕩 D.等幅振蕩
A.0°和90° B.0°和-90° C.0°和180° D.0°和-180°
A.當(dāng)時(shí)間常數(shù)T較大時(shí)有振蕩B.當(dāng)時(shí)間常數(shù)T較小時(shí)有振蕩C.有振蕩D.無(wú)振蕩