[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgjy-3MKDCK1PVuIzqFdiD3CBULx5FJkFikiFLWx5kI0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":23,"type":57},[],"2025-12-31 18:17:27",296930252,[],{"courseId":9,"courseImg":10,"courseName":11},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","设平面曲线的参数方程为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdccc73bc3e35f4e16ad0e2cf0fb5a8e8.png\">, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2e4bc748f72b47d99639bca2d90ef2cb.png\">,则其普通方程为",[14,25,34,43,52,58,61,66,74,79],{"answer":15,"createTime":5,"id":16,"options":17,"question":22,"source":23,"type":24},[],296930247,[18,19,20,21],"混合积 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4b220f788192afd6d8e5a4e1729513c5.png\"> 的值等于以这三个向量为棱的平行六面体的体积","混合积的绝对值表示三个向量所围成的平行六面体的体积","如果混合积为零,则三个向量共面","混合积的符号表示三个向量的方向关系,正负号表示右手系或左手系","下列关于混合积的说法中,正确的有","v1",1,{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":23,"type":24},[],296930248,[29,30,31,32],"平面曲线可以用参数方程表示","平面曲线可以用极坐标方程表示","平面曲线可以用直角坐标方程表示","平面曲线只能用参数方程表示","下列关于平面曲线的描述中,正确的有",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":23,"type":24},[],296930249,[38,39,40,41],"混合积的绝对值等于三个向量所构成的平行六面体的体积","混合积的符号表示三个向量的方向关系","混合积恒为正数","混合积的值与向量的顺序无关","下列关于混合积的说法中,哪些是正确的",{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":23,"type":24},[],296930250,[47,48,49,50],"曲线的方程可以表示为参数方程的形式","曲线的方程可以表示为隐函数的形式","曲线的方程只能表示为显函数的形式","曲线的方程不能表示为空间直线方程","下列关于曲线的方程的说法中,哪些是正确的",{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":23,"type":57},[],296930251,[],"已知向量 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5b83092003ee48256db9bc1088bf7747.png\">, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F056dcfff9747f0e7fd425b6307cc4d8b.png\">, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F44a418be9c1ed673228bf7cc03aea85c.png\">, 则它们的混合积 =",2,{"answer":59,"createTime":5,"id":6,"options":60,"question":12,"source":23,"type":57},[],[],{"answer":62,"createTime":5,"id":63,"options":64,"question":65,"source":23,"type":57},[],296930253,[],"设向量 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe4dd15f75a20d206f86d9100756ee521.png\">,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb43a22c447a73572b5b57925128d41fc.png\">,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F77e75a398e675e0690c571088e955a79.png\">,则 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffcaf497b6237366d8eed6c735482c068.png\">=",{"answer":67,"createTime":5,"id":68,"options":69,"question":72,"source":23,"type":73},[],296930254,[70,71],"正确","错误","混合积的值为零时,三个向量一定共面",3,{"answer":75,"createTime":5,"id":76,"options":77,"question":78,"source":23,"type":73},[],296930255,[70,71],"平面曲线的参数方程可以唯一地表示一条曲线",{"answer":80,"createTime":5,"id":81,"options":82,"question":41,"source":23,"type":73},[],296930256,[70,71]]