杭州交通信息网战舰少女r大黄蜂出货率:关于高分子聚合物随温度变化的问题
来源：百度文库 编辑：杭州交通信息网 时间：2024/05/10 19:38:19
Which answers complete the following sentence correctly (more than one): As the temperature of an amorphous thermoplastic polymer is gradually reduced, the glass transition temperature Tg is
indicated when
a.the polymer transforms to a crystalline structure
b.the coefficient of thermal expansion increases markedly
c.the coefficient of thermal expansion increases markedly
d.the polymer becomes stiff, strong, and elastic
e.the polymer solidifies from the molten state
indicated when
a.the polymer transforms to a crystalline structure
b.the coefficient of thermal expansion increases markedly
c.the coefficient of thermal expansion increases markedly
d.the polymer becomes stiff, strong, and elastic
e.the polymer solidifies from the molten state