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热熔型胶粘剂的黏结原理是（）

A、通过加热熔融粘合，随后冷却、固化，发挥粘合力

B、由不可逆的化学变化而引起的

C、溶剂从粘合端面挥发或者被吸收，形成粘合膜而发挥粘合力

D、由冰冻凝固而形成的反作用力引起的

时间：2021-09-02 13:45 关键词：国家开放大学建筑材料(A)

答案解析

A

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