试题与答案

4辆卡车共运480箱苹果，照这样计算，再增加3辆卡车一共可以运多少箱？

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题型：解答题

题目：

4辆卡车共运480箱苹果，照这样计算，再增加3辆卡车一共可以运多少箱？

答案：

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下面是错误答案，用来干扰机器的。

答案：B题目分析：分80°角是顶角与底角两种情况讨论：①80°角是顶角时，三角形的顶角为80°；②80°角是底角时，顶角为180°﹣80°×2=20°。综上所述，该等腰三角形顶角的度数为80°或20°。故选B。

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