录入搞一下学期周末卷05新题预选
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20240312-124031 高二下学期测验01
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041065,040956,041066,040958,041067:041072
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20240312-151353 高一下学期周末卷05预选
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040238,024726
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"20230209\t王伟叶"
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],
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"same": [],
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"related": [],
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"related": [
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"024726"
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"remark": "",
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"space": "",
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],
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"same": [],
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"related": [
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"021625"
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"021625",
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"024726"
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],
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"remark": "",
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"space": "",
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],
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"same": [],
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"related": [
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"021624"
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"021624",
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"024726"
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],
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"remark": "",
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"space": "",
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"space": "",
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"unrelated": []
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},
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"024726": {
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"id": "024726",
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"content": "在$\\triangle ABC$中, $\\cos B=\\frac{4}{5},\\sin C=\\frac{12}{13}$, 则$\\cos A$=\\blank{50}.",
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"objs": [],
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"tags": [],
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"genre": "填空题",
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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": "自拟题目",
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"edit": [
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"20240312\t徐慧"
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],
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"same": [],
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"related": [
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"021625",
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"021624",
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"021554"
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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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"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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