下列对有关事实的解释，错误的是_刷题宝

题干

下列对有关事实的解释，错误的是（）

A：酒精需要密封保存﹣﹣酒精分子在不停运动

B：冰水共存物属于纯净物﹣﹣冰和水都由水分子构成

C：过氧化氢分解属于化学变化﹣﹣过氧化氢分子本身发生变化

D：稀盐酸和稀硫酸都能使石蕊溶液变红﹣﹣两种溶液中都存在酸根离子

上一题下一题 0.0难度选择题更新时间:2017-08-11 12:05:36

答案(点此获取答案解析）

D

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已知双曲线 $\frac{x^{2}}{a^{2}} - \frac{y^{2}}{b^{2}} = 1 (a > 0, b > 0)$ 的两条渐近线分别为l₁，l₂，经过右焦点F垂直于l₁的直线分别交l₁，l₂ 于 A，B 两点．若| $\vec{O A}$ |，| $\vec{A B}$ |，| $\vec{O B}$ |成等差数列，且 $\vec{B F}$ 与 $\vec{F A}$ 反向，则该双曲线的离心率为（）

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下列说法正确的是（　　）

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