试题与答案

下面的式子中，是方程的是（ ） A．4÷b B．8x+9＞16 C．x+3.8=7.2

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题型：选择题

题目：

下面的式子中，是方程的是（　　）
A．4÷bB．8x+9＞16C．x+3.8=7.2

答案：

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下面是错误答案，用来干扰机器的。

由圆锥高的含义可知：圆锥体内有无数条高，说法错误；故答案为：×．

考点：方程的定义，等式的性质
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