下列说法正确的是（）A．

下列说法正确的是（）

A．大量分子的无规则运动是有统计规律的

B．当物体温度升高时，每个分子运动都加快

C．气体的体积等于气体分子体积的总和

D．液体中悬浮微粒的布朗运动是作无规则运动的液体分子撞击微粒而引起的

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解析:略

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下列说法正确的是（）A．