[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fe-nbMEc7vcATiuz5_ZEcMaoZdvtXNF8ekDC8mYpren0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":25,"type":77},[],"2026-01-11 21:22:09",309670622,[8,9],"正确","错误",{"courseId":11,"courseImg":12,"courseName":13},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","建筑中采用单叶双曲面的主要原因之一是因为外形漂亮",[16,27,36,45,54,63,72,78,83,86],{"answer":17,"createTime":5,"id":18,"options":19,"question":24,"source":25,"type":26},[],309670614,[20,21,22,23],"单叶双曲面","椭球面","双叶双曲面","双曲抛物面","方程\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2185552f2e150c36d1d78d16d1c089ba.gif\">表示的曲面是","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],309670615,[31,32,33,34],"椭圆","抛物线","双曲线","直线","以下哪项不可能是单叶双曲面的平截线",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],309670616,[40,41,42,43],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F05ef65eb154d7def95971365d8c72740.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fba0fc019b7dcd8964d9aaeae3b43dd5d.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3ca7f2d257a534858bd231ab769ebfdc.webp\">","平面不存在","曲面\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4e0590db813ca8a2618ac309a8aeced6.webp\">与平面相截成两条相交直线的平面是",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":25,"type":26},[],309670617,[49,50,51,52],"1","2","3","4","双叶双曲面\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F653eb38d7a033c1332c503687f61cd5d.webp\">的对称轴个数",{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":25,"type":26},[],309670618,[58,59,60,61],"单叶双曲面,有心","双叶双曲面,有心","单叶双曲面,无心","双叶双曲面,无心","方程\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb34e3d7cf776d4646f5fd43b5ba30bf6.webp\">表示( )曲面,它是( )曲面",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":25,"type":26},[],309670619,[67,68,69,70],"若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2d77f48a9d5e199b6736ca12b49a056.webp\">全大于零,则方程表示的曲面是椭球面","若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2d77f48a9d5e199b6736ca12b49a056.webp\">两正一负,则方程表示的曲面是单叶双曲面","若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2d77f48a9d5e199b6736ca12b49a056.webp\">两负一正,则方程表示的曲面是双叶双曲面","若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2d77f48a9d5e199b6736ca12b49a056.webp\">有一个为零,则方程表示的曲面是抛物柱面","已知方程\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4b915468eb58a7042538ae9de79a358a.webp\">,则下列说法错误的是",{"answer":73,"createTime":5,"id":74,"options":75,"question":76,"source":25,"type":77},[],309670620,[8,9],"单叶双曲面的平截线都是双曲线",3,{"answer":79,"createTime":5,"id":80,"options":81,"question":82,"source":25,"type":77},[],309670621,[8,9],"双曲面可以由直线运动生成",{"answer":84,"createTime":5,"id":6,"options":85,"question":14,"source":25,"type":77},[],[8,9],{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":25,"type":77},[],309670623,[8,9],"有心曲面是有界曲面"]