[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQX0on1wnHGxhmEsWMa5PM5DA7S2iBPhEkb3t_iWjsb4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":30,"type":31},[],"2025-06-13 12:53:02",199823129,[8,9,10],"质量块的数目","质量块的数目和每个质量块的自由度数","描述每个质量块位置所用的坐标的数目",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},15,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","a7620b56c1fc4d2f9026a0d163ef62c6","双自由度系统的振动","振动系统的自由度数取决于( )",[20,32,40,48,56,64,73,76,85,94],{"answer":21,"createTime":22,"id":23,"options":24,"question":29,"source":30,"type":31},[],"2025-06-13 12:53:01",199823100,[25,26,27,28],"自由振动","强迫振动","自激振动","参数振动","振动系统只在初始条件作用下的振动称为( )振动","v1",0,{"answer":33,"createTime":22,"id":34,"options":35,"question":39,"source":30,"type":31},[],199823104,[36,37,38],"外部激励的频率","较小的固有频率","较大的固有频率","当一个二自由度系统受到简谐激励时,系统以( )振动",{"answer":41,"createTime":22,"id":42,"options":43,"question":47,"source":30,"type":31},[],199823109,[44,45,46],"一个主振型","两个主振型","多个主振型","二自由度系统具有( )",{"answer":49,"createTime":22,"id":50,"options":51,"question":55,"source":30,"type":31},[],199823114,[52,53,54],"耦合的","非耦合的","线性的","一般情况下,二自由度系统的运动微分方程是( )",{"answer":57,"createTime":22,"id":58,"options":59,"question":63,"source":30,"type":31},[],199823118,[60,61,62],"固有振型","固有频率","解","系统以其某一阶固有频率振动时的形态称为( )",{"answer":65,"createTime":22,"id":66,"options":67,"question":72,"source":30,"type":31},[],199823123,[68,69,70,71],"耦合的微分方程组","耦合的代数方程组","非耦合的代数方程组","非耦合的微分方程组","二自由度系统的微分运动方程的一般形式为( )",{"answer":74,"createTime":5,"id":6,"options":75,"question":18,"source":30,"type":31},[],[8,9,10],{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":30,"type":31},[],199823133,[80,81,82,83],"惯性耦合;弹性耦合;解耦","弹性耦合;惯性耦合;解耦","弹性耦合;惯性耦合;耦合","惯性耦合;弹性耦合;耦合","静力耦合又称( );动力耦合又称( );当选用主坐标后微分方程会( )",{"answer":86,"createTime":87,"id":88,"options":89,"question":92,"source":30,"type":93},[],"2025-06-13 12:55:04",199824200,[90,91],"正确","错误","主模态也叫主振型",3,{"answer":95,"createTime":87,"id":96,"options":97,"question":98,"source":30,"type":93},[],199824201,[90,91],"广义坐标是线性相关的"]