💻 代码预览 · 在线考试系统H5移动端功能演示

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12  <div class="top"><span class="role">学生端</span><span style="margin-left:auto;font-size:12px;opacity:.85">驰旭教育</span></div>
13  <h1>成绩与解析</h1>
14  <div class="sub">高等数学（上）期末模拟</div>
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17  <div class="big">88<span style="font-size:18px">分</span></div>
18  <div class="meta">答对 17 / 20 题 · 正确率 85% · 用时 52:13 · 班级第 8 名</div>
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20<div class="section-title"><span>错题解析（3 道）</span><span class="more">全部题目</span></div>
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22  <div class="wh"><span class="tag no">单选</span><span>题目 5</span></div>
23  <div class="qh" style="font-size:14px;font-weight:600;margin-top:8px">若向量 a=(1,2)，b=(2,−1)，则 a·b =（ ）。</div>
24  <div class="my">你的答案：C. 5</div>
25  <div class="cor">正确答案：B. 0</div>
26  <div class="exp">解析：数量积 a·b = 1×2 + 2×(−1) = 0，故选 B。</div>
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28<div class="wrong">
29  <div class="wh"><span class="tag blue">判断</span><span>题目 11</span></div>
30  <div class="qh" style="font-size:14px;font-weight:600;margin-top:8px">函数 y = ln x 在定义域上单调递增。（ ）</div>
31  <div class="my">你的答案：✓ 正确</div>
32  <div class="cor">正确答案：✓ 正确</div>
33  <div class="exp">解析：ln x 在 (0,+∞) 上导数 1/x &gt; 0，单调递增，判断正确。</div>
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36  <div class="wh"><span class="tag violet">多选</span><span>题目 18</span></div>
37  <div class="qh" style="font-size:14px;font-weight:600;margin-top:8px">下列级数收敛的有（ ）。</div>
38  <div class="my">你的答案：A、B</div>
39  <div class="cor">正确答案：A、B、C</div>
40  <div class="exp">解析：等比级数 |q|&lt;1 收敛，p 级数 p&gt;1 收敛；D 为调和级数发散，故选 ABC。</div>
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