添加20176关联题目19838
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@ -512630,6 +512630,31 @@
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"space": "4em",
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"space": "4em",
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"unrelated": []
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"unrelated": []
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},
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"019838": {
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"id": "019838",
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"content": "已知$a\\in \\mathbf{R}$, 当$|x^2-4|\\ge 1$成立时, $|x-2|\\ge a$也成立, 求$a$的取值范围.",
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"objs": [],
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"tags": [
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"第一单元"
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],
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"genre": "4em",
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"ans": "$(-\\infty,-2+\\sqrt{5}]$",
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"solution": "",
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"duration": -1,
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"usages": [],
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"origin": "2025届高一校本作业必修第二章-20230925修改",
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"edit": [
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"20220901\t王伟叶\t伍杨超",
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"20230925\t王伟叶"
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],
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"same": [],
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"related": [
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"020176"
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],
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"remark": "",
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"space": "4em",
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"unrelated": []
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},
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"020001": {
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"020001": {
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"id": "020001",
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"id": "020001",
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"content": "判断下列各组对象能否组成集合, 若能组成集合, 指出是有限集还是无限集.\\\\\n(1) 上海市控江中学$2022$年入学的全体高一年级新生;\\\\\n(2) 中国现有各省的名称;\\\\\n(3) 太阳、$2$、上海市;\\\\\n(4) 大于$10$且小于$15$的有理数;\\\\\n(5) 末位是$3$的自然数;\\\\\n(6) 影响力比较大的中国数学家;\\\\\n(7) 方程$x^2+x-3=0$的所有实数解;\\\\ \n(8) 函数$y=\\dfrac 1x$图像上所有的点;\\\\ \n(9) 在平面直角坐标系中, 到定点$(0, 0)$的距离等于$1$的所有点;\\\\\n(10) 不等式$3x-10<0$的所有正整数解;\\\\\n(11) 所有的平面四边形.",
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"content": "判断下列各组对象能否组成集合, 若能组成集合, 指出是有限集还是无限集.\\\\\n(1) 上海市控江中学$2022$年入学的全体高一年级新生;\\\\\n(2) 中国现有各省的名称;\\\\\n(3) 太阳、$2$、上海市;\\\\\n(4) 大于$10$且小于$15$的有理数;\\\\\n(5) 末位是$3$的自然数;\\\\\n(6) 影响力比较大的中国数学家;\\\\\n(7) 方程$x^2+x-3=0$的所有实数解;\\\\ \n(8) 函数$y=\\dfrac 1x$图像上所有的点;\\\\ \n(9) 在平面直角坐标系中, 到定点$(0, 0)$的距离等于$1$的所有点;\\\\\n(10) 不等式$3x-10<0$的所有正整数解;\\\\\n(11) 所有的平面四边形.",
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@ -518015,7 +518040,9 @@
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"20220901\t王伟叶\t伍杨超"
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"20220901\t王伟叶\t伍杨超"
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],
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],
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"same": [],
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"same": [],
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"related": [],
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"related": [
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"019838"
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],
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"remark": "",
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"remark": "",
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"space": "4em",
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"space": "4em",
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"unrelated": []
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"unrelated": []
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