[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ftd6CKgOxaeuLCEFN7-OyZpojDSWivBjtHH6RbEgmGCs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":29,"type":80},[],"2025-11-28 00:37:38",243648651,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},15,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","6996aa7373e74d09a5dd0c848f6b5ceb","两向量的数量积——测验","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6348a596822a6d57a7d26ac10fcb88c4.webp\">",[19,31,41,50,59,68,75,81,86,91],{"answer":20,"createTime":21,"id":22,"options":23,"question":28,"source":29,"type":30},[],"2023-10-12 22:30:00",99433565,[24,25,26,27],"25","50","14","7","已知平行四边形ABCD,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8ae6a968863b24bd8fa09e965647d36.webp\">AC和BD是对角线,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9949ad9f3fee979045c7ebd45680eb04.webp\">为( )","v1",0,{"answer":32,"createTime":33,"id":34,"options":35,"question":40,"source":29,"type":30},[],"2023-10-12 22:30:01",99433569,[36,37,38,39],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F46f1547f962aa3557a4c45cc8e17900d.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd0e982b95f7679ff461937e00b3c1bf8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2104665ed7671226a28b4362a0bb39e9.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F982962d9d6a9b8e7257265b08c3fa257.webp\">","设\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa51a112e60ea055873c8233245bd0a2f.webp\">是两两垂直的单位向量且顺序符合右手规则,则向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F85fdb5c3a3d9dbf9e1975f3c8a094a98.webp\">与向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3b3396995555d4f699a6bb66421966cc.webp\">的夹角是( )",{"answer":42,"createTime":33,"id":43,"options":44,"question":49,"source":29,"type":30},[],99433570,[45,46,47,48],"(-2,1,-2)","(2,1,-2)","(2,1,2)","(-2,1,2)","与向量AB(1,2,0),CD(1,0,-1)都垂直的向量为",{"answer":51,"createTime":33,"id":52,"options":53,"question":58,"source":29,"type":30},[],99433571,[54,55,56,57],"1\u002F3","1\u002F2","1","2\u002F3","已知a,b,c是向量,丨a丨=1,丨b丨=2,丨c丨=2且a,b,c两两垂直,则向量a+b+c与a的夹角余弦值为",{"answer":60,"createTime":33,"id":61,"options":62,"question":67,"source":29,"type":30},[],99433573,[63,64,65,66],"平行","垂直","相等","不平行也不垂直","设\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5ffc4822eee12acbe5c9ceeaef503b77.gif\">均为非零向量,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1de4ee3a1a7828c811fc2d94d788b851.gif\">与非零向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F575c0f311a5139db9f58ee52373d099d.gif\">的关系是",{"answer":69,"createTime":33,"id":70,"options":71,"question":74,"source":29,"type":30},[],99433574,[27,72,26,73],"-7","-14","已知a,b,c是向量,丨a丨=1,丨b丨=2,丨c丨=3,a+b+c=0则a·b+b·c+c·a=",{"answer":76,"createTime":5,"id":77,"options":78,"question":79,"source":29,"type":80},[],243648648,[8,9],"数量积满足交换律",3,{"answer":82,"createTime":5,"id":83,"options":84,"question":85,"source":29,"type":80},[],243648649,[8,9],"两向量的数量积是一个向量",{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":29,"type":80},[],243648650,[8,9],"向量满足\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffbb47a0e49e7029630d34c6349633e21.webp\">",{"answer":92,"createTime":5,"id":6,"options":93,"question":17,"source":29,"type":80},[],[8,9]]