题目内容

下列关于边界摩擦的描述，错误的是______。

A. 按边界膜的结构形式分为吸附膜和反应膜
B. 物理吸附膜受热产生脱吸，所以不稳定；而化学吸附膜和化学反应膜受热不产生脱吸，所以它们比物理吸附膜稳定
C. 物理吸附膜是润滑剂中极性分子靠静电吸附在摩擦表面上形成极薄的边界膜
D. 化学吸附膜是润滑剂中的极性分子靠化学键力吸附在金属表面上时形成的边界膜

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