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【单选题】
关于物理吸附和化学吸附,下面的说法中不正确的是A.
物理吸附是分子间作用，化学吸附是化学键作用
B.
物理吸附有选择性，化学吸附无选择性
C.
物理吸附速率快，化学吸附速率慢
D.
升高温度对物理吸附和化学吸附都有利
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