新增两道关联题
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@ -34183,7 +34183,9 @@
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"same": [
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"011334"
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"011334"
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"related": [],
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"related": [
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"024613"
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],
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"remark": "",
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"remark": "",
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@ -498751,7 +498753,9 @@
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"20230705\t王伟叶"
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"20230705\t王伟叶"
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],
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"024614"
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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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@ -668391,6 +668395,63 @@
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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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},
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"024613": {
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"id": "024613",
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"content": "在平面直角坐标系$xOy$中, 将点$A(2,1)$绕原点$O$逆时针旋转$\\dfrac\\pi 4$到点$B$, 若以射线$OB$为终边的角为$\\alpha$, 则$\\cos \\alpha$的值为\\blank{50}.",
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"objs": [
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"K0701001X"
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],
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"tags": [
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"第七单元",
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"直线",
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"2023届高三-四月错题重做-04-易错题-解析几何",
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"2023届高三-四月错题重做-04-解析几何",
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"2023届高三-第一轮复习讲义-34-直线及其方程",
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"J20240534-第一轮复习讲义34直线及其方程"
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],
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"genre": "",
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"ans": "$\\frac{\\sqrt{10}}{10}$",
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"solution": "",
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"duration": -1,
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"usages": [],
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"origin": "赋能练习-20240226修改",
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"edit": [
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"20220624\t朱敏慧, 王伟叶",
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"20240226\t王伟叶"
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],
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"same": [],
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"related": [
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"000960"
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],
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"remark": "",
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"space": "",
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"unrelated": []
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},
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"024614": {
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"id": "024614",
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"content": "已知角$\\alpha$满足$\\sqrt{3} \\sin \\alpha+\\cos \\alpha=1$, 求$\\alpha$的值的集合.",
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"objs": [],
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"tags": [
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"第三单元"
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],
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"genre": "4em",
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"ans": "",
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"solution": "",
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"duration": -1,
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"usages": [],
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"origin": "空中课堂必修第二册三角例题与习题-20240226修改",
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"edit": [
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"20230705\t王伟叶",
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"20240226\t王伟叶"
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],
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"same": [],
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"related": [
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"018388"
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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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"030001": {
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"030001": {
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"id": "030001",
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"id": "030001",
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"content": "若$x,y,z$都是实数, 则:(填写``\\textcircled{1} 充分非必要、\\textcircled{2} 必要非充分、\\textcircled{3} 充要、\\textcircled{4} 既非充分又非必要''之一)\\\\\n(1) ``$xy=0$''是``$x=0$''的\\blank{50}条件;\\\\\n(2) ``$x\\cdot y=y\\cdot z$''是``$x=z$''的\\blank{50}条件;\\\\\n(3) ``$\\dfrac xy=\\dfrac yz$''是``$xz=y^2$''的\\blank{50}条件;\\\\\n(4) ``$|x |>| y|$''是``$x>y>0$''的\\blank{50}条件;\\\\\n(5) ``$x^2>4$''是``$x>2$'' 的\\blank{50}条件;\\\\\n(6) ``$x=-3$''是``$x^2+x-6=0$'' 的\\blank{50}条件;\\\\\n(7) ``$|x+y|<2$''是``$|x|<1$且$|y|<1$'' 的\\blank{50}条件;\\\\\n(8) ``$|x|<3$''是``$x^2<9$'' 的\\blank{50}条件;\\\\\n(9) ``$x^2+y^2>0$''是``$x\\ne 0$'' 的\\blank{50}条件;\\\\\n(10) ``$\\dfrac{x^2+x+1}{3x+2}<0$''是``$3x+2<0$'' 的\\blank{50}条件;\\\\\n(11) ``$0<x<3$''是``$|x-1|<2$'' 的\\blank{50}条件.",
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"content": "若$x,y,z$都是实数, 则:(填写``\\textcircled{1} 充分非必要、\\textcircled{2} 必要非充分、\\textcircled{3} 充要、\\textcircled{4} 既非充分又非必要''之一)\\\\\n(1) ``$xy=0$''是``$x=0$''的\\blank{50}条件;\\\\\n(2) ``$x\\cdot y=y\\cdot z$''是``$x=z$''的\\blank{50}条件;\\\\\n(3) ``$\\dfrac xy=\\dfrac yz$''是``$xz=y^2$''的\\blank{50}条件;\\\\\n(4) ``$|x |>| y|$''是``$x>y>0$''的\\blank{50}条件;\\\\\n(5) ``$x^2>4$''是``$x>2$'' 的\\blank{50}条件;\\\\\n(6) ``$x=-3$''是``$x^2+x-6=0$'' 的\\blank{50}条件;\\\\\n(7) ``$|x+y|<2$''是``$|x|<1$且$|y|<1$'' 的\\blank{50}条件;\\\\\n(8) ``$|x|<3$''是``$x^2<9$'' 的\\blank{50}条件;\\\\\n(9) ``$x^2+y^2>0$''是``$x\\ne 0$'' 的\\blank{50}条件;\\\\\n(10) ``$\\dfrac{x^2+x+1}{3x+2}<0$''是``$3x+2<0$'' 的\\blank{50}条件;\\\\\n(11) ``$0<x<3$''是``$|x-1|<2$'' 的\\blank{50}条件.",
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