an style="font-size: 14pt">(</span><span style="font-size: 14pt">总距离</span><span style="font-size: 14pt">/v)</span><span style="font-size: 14pt">，那么我们要从</span><span style="font-size: 14pt">s</span><span style="font-size: 14pt">号点飞到</span><span style="font-size: 14pt">t</span><span style="font-size: 14pt">号点至少需要多少时间呢？答案保留</span><span style="font-size: 14pt">10</span><span style="font-size: 14pt">位小数。</span></div>
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