[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1IBW90sJvPXl4uI9UcMQuiJigArElkG7Md-PuPEFpbw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2026-05-10 21:29:34",1083839848,[8,9,10,11],"More regular shape","Possible existence of limit cycles","A closed curve","Without singular point",{"courseId":13,"workId":14,"workName":15},"1000114120","63527636","第九章单元测试","Compared with the phase trajectory of linear systems, the phase trajectory of nonlinear systems is( )",[18,29,38,41,46],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],1083839817,[22,23,24,25],"Stable","Unstable","Self-excited oscillation","Critical stable","If the final phase trajectory of a nonlinear system is a closed ring, then the state of this nonlinear system is( )","v2",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],1083839833,[33,34,35,36],"A straight line","Composed of linear and saturated segments","Exponential curve","Sine curve","The shape of the saturation characteristic input-output curve is ( )",{"answer":39,"createTime":5,"id":6,"options":40,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":27,"type":28},[],1083839856,[22,23,24,25],"If the final phase trajectory of a nonlinear system is a helix that converges to the origin, then the state of the nonlinear system is( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":53,"source":27,"type":28},[],1083840052,[50,51,52,35],"Continuous and smooth","Piecewise linear","Having jumping discontinuity points","The input-output curve of relay characteristics is ( )"]