[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fGmHYLRXOsRrGL7X74lLgASutKCIj45usvVkOFPv8SWA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":26,"type":62},[],"2025-12-02 08:44:08",247454271,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F23e23276175409c6bfff1fef1cab1f71.png\">,其中l,m,n为不全为零的常数","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F505f03c103683df6295d2a11e509c053.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F01b99b00339241fcc24936fac9e356a1.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8e38e36f65460531286501caef909246.webp\">共面",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},25,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","exam_167547988","第一章 测验 20251030","设\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Facc672322a9ceddb42feaf9ce58c3240.webp\">是三向量,则下列条件不是三向量共面的充分必要条件的是( )",[21,28,33,38,43,48,53,63,66,75],{"answer":22,"createTime":5,"id":23,"options":24,"question":25,"source":26,"type":27},[],247454264,[],"已知四面体OABCD的顶点坐标O(0,0,0),A(1,-1,1),B(2,1,0),C(-1,1,1),则四面体体积为__________","v1",2,{"answer":29,"createTime":5,"id":30,"options":31,"question":32,"source":26,"type":27},[],247454265,[],"已知空间的基向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F42c7f74dc935f270a6beb66cca59a5dc.png\">则向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc855e67942c96d0c29a4fe835522606f.png\">的坐标是( )",{"answer":34,"createTime":5,"id":35,"options":36,"question":37,"source":26,"type":27},[],247454266,[],"点P(1,2,-1)关于坐标面yoz的对称点坐标是( ),关于y轴的对称点坐标是( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":42,"source":26,"type":27},[],247454267,[],"向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4a777bf30d075980843a9a1906a0c9e0.webp\">在\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2c50712455fea8ce650ffc7e0970859.webp\">上的射影是( )",{"answer":44,"createTime":5,"id":45,"options":46,"question":47,"source":26,"type":27},[],247454268,[],"在直角坐标系下,向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0808dab8bb17f01738f633095ff8cd0c.webp\">在y轴上的射影是( )",{"answer":49,"createTime":5,"id":50,"options":51,"question":52,"source":26,"type":27},[],247454269,[],"已知四面体ABCD的顶点坐标A(0,0,0),B(6,0,6),C(4,3,0),D(2,-1,3),则四面体的体积是( )",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":26,"type":62},[],247454270,[57,58,59,60],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F72d7b28caca660953dc26518e59064f7.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F567997b92548f5684a94340bb9a32808.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F28d5e43a8e6acea4aa2365051b4c14d1.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbbd0e2ff7e131864dc77be59fe2ad3ca.webp\">","设M是平行四边形ABCD的中心,O是任意一点,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c2e1770b2cf2c17f238313d883113a9.webp\">",0,{"answer":64,"createTime":5,"id":6,"options":65,"question":19,"source":26,"type":62},[],[8,9,10,11],{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":26,"type":62},[],247454272,[70,71,72,73],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9d1cb885973ac62957ae63e33f0958c1.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F325351287e86c63bb5cd48d8f963e58b.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1b7290c0778ee106191d617a84c5741c.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff394f489c06673bf62d53acb5bb91c93.webp\">","在直角坐标系中,已知三点A(-2,1,4),B(-2,-3,-4),C(-1,3,3),则三角形ABC的面积为( )",{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":26,"type":62},[],247454273,[79,80,81,82],"-5","5","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2446ba9e875b66fefca928ae5ae3bbbe.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c9d1eed9557a48379403c24d719eef3.webp\">","已知向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffad51e5addae65a92597220edb8d95d4.webp\">与单位向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F72291121c9f796a385e6c263b400dcb1.webp\">的夹角是\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0ee682f94b143dc5fe321d32f1e2f323.webp\">,且\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8ffcf2caecb34e51cb650c34034255b.webp\">,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5658762bb7df5974a92697b79434dc1a.webp\">为( )"]