[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f-6KWySLOymKaGnVj46OQCcdLD7PtSGoOEA33Ak-84U0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-01-03 23:32:54",125468448,[8,9,10,11],"原动件数目为2,自由度为2","原动件数目为1,自由度为2","自由度大于零","原动件数目为2",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},29,"7aa06ec7a75a96b997d80b7ff803329c","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","航空机械基础","work_29915737","2.1&2.2","下列机构情况中,()的运动一定是不确定的",[21,33,42,51,60,70,73,82,88,94],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-01-03 23:32:53",125468415,[26,27,28,29],"铰链","B和C","转动副","回转副","若运动副只允许两构件作相对转动则称该运动副为( )","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],125468420,[37,38,39,40],"回转副 , 移动副","移动副 , 螺旋副","回转副, 螺旋副","移动副 , 球面副","下列都属于平面低副的有( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],125468426,[46,47,48,49],"改善其受力情况","使机构运动顺利","增加构件的刚性","改变机构的自由度","下列关于虚约束的说法错误的是:( )",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],125468433,[55,56,57,58],"两个齿轮的啮合","一个杆和滑块的铰接","滑块和滑道的连接","杆和机架的铰接","下列不属于运动低副的是:( )",{"answer":61,"createTime":62,"id":63,"options":64,"question":69,"source":31,"type":32},[],"2024-01-03 23:32:55",125468441,[65,66,67,68],"虚约束","都不用去掉","二者都除去","局部自由度","在计算机构的自由度应除去不计的是( )",{"answer":71,"createTime":5,"id":6,"options":72,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":74,"createTime":5,"id":75,"options":76,"question":81,"source":31,"type":32},[],125468453,[77,78,79,80],"4","1","5","3","一个平面机构共有5个构件,则该机构有( )个活动构件",{"answer":83,"createTime":5,"id":84,"options":85,"question":59,"source":31,"type":32},[],125468455,[86,56,87,58],"凸轮和一个板件的连接","两个杆的铰接",{"answer":89,"createTime":62,"id":90,"options":91,"question":93,"source":31,"type":32},[],125468466,[92,55,86,87],"凸轮和一个轮子的连接","下列不属于运动高副的是:( )",{"answer":95,"createTime":96,"id":97,"options":98,"question":59,"source":31,"type":32},[],"2024-01-02 12:18:06",125468468,[58,57,99,87],"凸轮和一个尖顶杆的连接"]