[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fhvMiijJGEH5be13yz_Ph3qcf-eJyC5ebdtQ4jHpHYGc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2024-01-04 23:58:47",127261379,[8,9,10,11],"{<1,3>}","{<1,2>,<1,3>}","{2,3}","{<1,2>}",{"courseId":13,"courseImg":14,"courseName":15},"a526d6a0c86c384fb8679f56d0f0f7fe","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","离散数学与应用","设R={<1,2>,<1,3>,<2,2>,<2,4>,<3,2>}, 则R↾{1}为( )",[18,30,39,48,57,66,75,82,91,100],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2024-01-04 23:58:46",127261355,[23,24,25,26],"V4=< Zn, Å, Ä>","V3=<P(B), ∪, ∩, Æ, B>","V1=<R, +, ·, 0, 1>","V2=<Mn(R), +, ·, q, E> ,q为 n 阶全0矩阵,E为 n 阶单位矩阵","下面代数系统不是同类型的是( )","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":38,"source":28,"type":29},[],127261356,[34,35,36,37],"A-B = {x | xÎA Ù xÏB}","A-B = {x | xÏA Ù xÎB}","AÈB = {x | xÎA Ú xÎB}","AÇB = {x | xÎA Ù xÎB}","关于集合的运算,下列不正确的是( )",{"answer":40,"createTime":20,"id":41,"options":42,"question":47,"source":28,"type":29},[],127261360,[43,44,45,46],""x (ØF(x)ÚG(x))",""x (F(x)®G(x))","$ x (F(x)ÚG(x))","Ø $ x (F(x)Ù Ø G(x))","设F(x):x是人;G(x):x要吃饭.用谓词公式表达下述命题:所有的人都要吃饭,其中错误的表达式是( )",{"answer":49,"createTime":20,"id":50,"options":51,"question":56,"source":28,"type":29},[],127261361,[52,53,54,55],"半欧拉图","既不是欧拉图也不是半欧拉图","有向图","欧拉图","下列图形是( ). \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F076d507f8f3fed821deb15f74343ccb3.png\">",{"answer":58,"createTime":5,"id":59,"options":60,"question":65,"source":28,"type":29},[],127261363,[61,62,63,64],"p1={{ a, b, c },{ d }}","p4={Æ,{ a, b }, { c, d }}","p3={{ a, b}, { c }}","p2={{ a }, { a, b, c, d }}","设A={ a, b, c, d }, 下面子集族是A的划分块的是",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":28,"type":29},[],127261366,[70,71,72,73],"既非单射也非满射","双射函数","满射函数","单射函数","设f:R→R, f(x)=-x2+2x-1,此函数为( )",{"answer":76,"createTime":5,"id":77,"options":78,"question":81,"source":28,"type":29},[],127261369,[44,45,79,80],""x (F(x)ÚG(x))","$ x (F(x)ÙG(x))","设F(x): x为人,G(x): x喜欢吃糖,D为全总个体域,在一阶逻辑中将命题"有人喜欢吃糖"符号化正确的是( )",{"answer":83,"createTime":5,"id":84,"options":85,"question":90,"source":28,"type":29},[],127261370,[86,87,88,89],"R1和R2是A上的传递关系, R3不是A上的传递关系","R1是A上的传递关系, R2和R3不是A上的传递关系","R1和R3是A上的传递关系, R2不是A上的传递关系","R3是A上的传递关系, R1和R2不是A上的传递关系","设A={1,2,3}, R1, R2, R3是A上的关系, 其中R1={<1,1>,<2,2>},R2={<1,2>,<2,3>}, R3={<1,3>},则选项正确的是( )",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":28,"type":29},[],127261373,[95,96,97,98],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcd98032e046977dd4821f700ac478f39.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fda6625910bbab2dbb43ec88baf997dd1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdc09fab9f8438149ae5bf611d0c4b181.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3b0d0f712bb3f1ea40d6a4c661c508a5.png\">","关于集合的文氏图,下列选项中是关于集合A-B相应文氏图的是( )",{"answer":101,"createTime":5,"id":6,"options":102,"question":16,"source":28,"type":29},[],[8,9,10,11]]