r40/exam.html · 约 2839 字符
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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>
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17 <div class="cd" id="cd">59:48</div>
18 <div class="pr"><div class="bar2"><i style="width:15%"></i></div><div class="pl">第 3 / 20 题 · 已答 3 题</div></div>
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21 <div class="qt">单选题 · 难度 ★★☆</div>
22 <div class="qh">题目 3：设函数 f(x)=x³−3x，则 f(x) 在区间 [−1,1] 上的最大值为（ ）。</div>
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24 <div class="opt on"><span class="rdo"></span><span class="ot">A. −2</span></div>
25 <div class="opt"><span class="rdo"></span><span class="ot">B. 0</span></div>
26 <div class="opt"><span class="rdo"></span><span class="ot">C. 2</span></div>
27 <div class="opt"><span class="rdo"></span><span class="ot">D. 4</span></div>
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31 <div class="qt">单选题 · 难度 ★☆☆</div>
32 <div class="qh">题目 4：下列极限 lim(x→0) sin x / x 的值为（ ）。</div>
33 <div class="opts">
34 <div class="opt"><span class="rdo"></span><span class="ot">A. 0</span></div>
35 <div class="opt"><span class="rdo"></span><span class="ot">B. 1</span></div>
36 <div class="opt"><span class="rdo"></span><span class="ot">C. ∞</span></div>
37 <div class="opt"><span class="rdo"></span><span class="ot">D. 不存在</span></div>
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