diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index 97aa04eb..381fba45 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -616671,6 +616671,86 @@ "space": "4em", "unrelated": [] }, + "023003": { + "id": "023003", + "content": "记异面直线 $a$ 和 $b$ 所成的角为 $\\theta$, 则 $\\theta$ 的取值范围是\\bracket{20}.\n\\fourch{$(0, \\dfrac{\\pi}{2})$}{$(0, \\pi)$}{$(0, \\dfrac{\\pi}{2}]$}{$(0, \\pi]$}", + "objs": [], + "tags": [], + "genre": "选择题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "24届赋能补充题目", + "edit": [ + "20240104\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "023004": { + "id": "023004", + "content": "函数 $y=\\sin 2 x$ 的图像与函数 $y=\\cos x$ 的图像在区间 $[0,2 \\pi)$ 上交点的个数是\\blank{50}.", + "objs": [], + "tags": [], + "genre": "填空题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "24届赋能补充题目", + "edit": [ + "20240104\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "023005": { + "id": "023005", + "content": "若 $2-\\mathrm{i}$ 是关于 $x$ 的方程 $x^2+p x+q=0$ 的一个根 (其中 $\\mathrm{i}$ 为虚数单位, $p, q \\in \\mathbf{R}$ ), 则 $q$ 的值为\\bracket{20}.\n\\fourch{$-5$}{$5$}{$-3$}{$3$}", + "objs": [], + "tags": [], + "genre": "选择题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "24届赋能补充题目", + "edit": [ + "20240104\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "023006": { + "id": "023006", + "content": "若 $m$ 为实数且 $m \\neq 0$, 则``$m>0$''是``函数 $f(x)=|x(m x+2)|$ 在区间 $(0,+\\infty)$ 上严格增''的 \\bracket{20}.\n\\twoch{充分非必要条件}{必要非充分条件}{充要条件}{既非充分也非必要条件}", + "objs": [], + "tags": [], + "genre": "选择题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "24届赋能补充题目", + "edit": [ + "20240104\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, "030001": { "id": "030001", "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