[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4KGaGsawTHPhb0h4bORwQHTTv07yvCmM6aB44ikf6uQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":114},[],"2025-12-17 19:09:58",270340046,[8,9,10,11],"养马","屯田","建立了承宣布政使司","开设驿道",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},132,"ee3ff2ae52dcde3ca9f7d3170e3a4792","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F20d89f5ffe9c69cb5e54e6d056c09412.jpg","贵州省情","work_48216541","NEW-离散数学-第五章作业","明代是贵州历史发展的一个重要里程碑.主要标志是( )",[21,33,42,51,60,69,78,87,96,105],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2026-01-15 13:11:24",235105110,[26,27,28,29],"f是满射函数,g是单射函数","f是单射函数,g是满射函数","f是满射函数,g是满射函数","f是单射函数,g是单射函数","设函数f:A→B,g:B→C,若f°g是双射,则","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],235105111,[37,38,39,40],"f:R->[-1,1],f(x)=sin2x","f:N->N,f(n)=\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2815196056c8a054360d9b1c86374fd5.webp\">+2","f:R->R,f(x)=\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd4756bab4bb503af2396444b82d7f3a0.webp\">+1","f:N->N,f(n)= n mod 3","下列函数中非单非满映射的是",{"answer":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],235105112,[46,47,48,49],"g是满射函数","f是单射函数","f是满射函数","g是双射函数","设函数g:A→B,f:B→C, 若g°f是满射,则",{"answer":52,"createTime":23,"id":53,"options":54,"question":59,"source":31,"type":32},[],235105113,[55,56,57,58],"9\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe3cda31aeccd3dd434ba85fd9f464854.webp\">+8","12\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F95a6281adb2d51051cbd6d2aba7dd36e.webp\">+12\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd4756bab4bb503af2396444b82d7f3a0.webp\">-9\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe3cda31aeccd3dd434ba85fd9f464854.webp\">-6x+6","18\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F49fbbb96043cd5c751c4e8493faeedea.webp\">+39\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44de72553abd775dc59cdfbf0a9bf336.webp\">+20","6\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe3cda31aeccd3dd434ba85fd9f464854.webp\">+3x","设有函数f:R→R和g:R→R,且有f(x)=3\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44de72553abd775dc59cdfbf0a9bf336.webp\">+3,g(x)=2\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44de72553abd775dc59cdfbf0a9bf336.webp\">+x-1,求f(x) o g(x)=",{"answer":61,"createTime":23,"id":62,"options":63,"question":68,"source":31,"type":32},[],235105114,[64,65,66,67],"双射函数","不是函数","满射函数","单射函数","设函数f:A→B,g:B→C, 若f、g是满射,则f°g是",{"answer":70,"createTime":23,"id":71,"options":72,"question":77,"source":31,"type":32},[],235105115,[73,74,75,76],"不是单射也不是满射","单射","满射","双射","X={a,b,c,d,e},Y={1,2,3,4},f从X到Y的映射,其中f(a)=2,f(b)=4,f(c)=1,f(d)=3,f(e)=4,则f是",{"answer":79,"createTime":23,"id":80,"options":81,"question":86,"source":31,"type":32},[],235105116,[82,83,84,85],"sin\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fff86ac6ed740babca2566fb37b5b210c.webp\">","f(x)=\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c3f351f5b03174c1d613c37946436b5.webp\">","x x>0f(x)={ x+2 x≤0","f(x)=sin x","下列函数中,实数集到实数集的双射的是",{"answer":88,"createTime":23,"id":89,"options":90,"question":95,"source":31,"type":32},[],235105117,[91,92,93,94],"{<x,y>|x,y∈N,x+y<10}","{<x,y>|x,y∈R,x=|y|}","{<x,y>|x,y∈R,|x|=|y|}","{<x,y>|x,y∈R,|x|=y}","下列关系中能构成函数的是",{"answer":97,"createTime":23,"id":98,"options":99,"question":104,"source":31,"type":32},[],235105118,[100,101,102,103],"f是单射","f是满射","f非单射非满射","f是双射的","设函数f:N→N(N 为自然数集),f(n)=n+1,下面四个命题为真的是",{"answer":106,"createTime":23,"id":107,"options":108,"question":113,"source":31,"type":32},[],235105119,[109,110,111,112],"{<1,b>,<2,b>,<3,b>}","{<1,c>,<2,a>,<3,b>}","{<1,a>,<1,b>,<3,c>}","{<1,a>,<2,a>,<3,c>}","设A={1,2,3},B={a,b,c},下列关系 是从A到B的双射函数",1]