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Merge commit '04bb5a09819c39f63344a3bc20e1e9eca1ec06cd'

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wangweiye7840 2024-03-13 12:22:08 +08:00
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题库0.3/Problems.json
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@ -431923,7 +431923,7 @@
}, },
"015151": { "015151": {
"id": "015151", "id": "015151",
"content": "``民生''供电公司为了分析``康居''小区的用电量$y$(单位: $\\text{kW}\\cdot\\text{h}$)与气温$x$(单位: ${}^\\circ\\text{C})$之间的关系, 随机统计了$4$天的用电量与当天的气温, 这两者之间的对应关系见下表:\n\\begin{center}\n\\begin{tabular}{|c|c|c|c|c|}\n\\hline 气温$x$& 18 & 13 & 10 & -1 \\\\\n\\hline 用电量$y$& 24 & 34 & 38 & 64 \\\\\n\\hline\n\\end{tabular} \n\\end{center}\n若上表中的数据可用回归方程$y=-2 x+b$($b \\in \\mathbf{R}$)来预测, 则当气温为$-4^{\\circ} \\text{C}$时该小区相应的用电量约为$\\text{kW} \\cdot \\text{h}$\\blank{50}.", "content": "``民生''供电公司为了分析``康居''小区的用电量$y$(单位: $\\text{kW}\\cdot\\text{h}$)与气温$x$(单位: ${}^\\circ\\text{C})$之间的关系, 随机统计了$4$天的用电量与当天的气温, 这两者之间的对应关系见下表:\n\\begin{center}\n\\begin{tabular}{|c|c|c|c|c|}\n\\hline 气温$x$& 18 & 13 & 10 & -1 \\\\\n\\hline 用电量$y$& 24 & 34 & 38 & 64 \\\\\n\\hline\n\\end{tabular} \n\\end{center}\n若上表中的数据可用回归方程$y=-2 x+b$($b \\in \\mathbf{R}$)来预测, 则当气温为$-4^{\\circ} \\text{C}$时该小区相应的用电量约为\\blank{50}$\\text{kW} \\cdot \\text{h}$.",
"objs": [], "objs": [],
"tags": [ "tags": [
"第九单元", "第九单元",