[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fJbsmUTfYuTNdIbahuWzgY32x5Hp-iRGvPY7te-nAfEA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":23,"type":24},[],"2026-05-10 21:29:34",1083839856,[8,9,10,11],"Stable","Unstable","Self-excited oscillation","Critical stable",{"courseId":13,"workId":14,"workName":15},"1000114120","63527636","第九章单元测试","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( )",[18,25,34,43,46],{"answer":19,"createTime":5,"id":20,"options":21,"question":22,"source":23,"type":24},[],1083839817,[8,9,10,11],"If the final phase trajectory of a nonlinear system is a closed ring, then the state of this nonlinear system is( )","v2",0,{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":23,"type":24},[],1083839833,[29,30,31,32],"A straight line","Composed of linear and saturated segments","Exponential curve","Sine curve","The shape of the saturation characteristic input-output curve is ( )",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":23,"type":24},[],1083839848,[38,39,40,41],"More regular shape","Possible existence of limit cycles","A closed curve","Without singular point","Compared with the phase trajectory of linear systems, the phase trajectory of nonlinear systems is( )",{"answer":44,"createTime":5,"id":6,"options":45,"question":16,"source":23,"type":24},[],[8,9,10,11],{"answer":47,"createTime":5,"id":48,"options":49,"question":53,"source":23,"type":24},[],1083840052,[50,51,52,31],"Continuous and smooth","Piecewise linear","Having jumping discontinuity points","The input-output curve of relay characteristics is ( )"]