高分子合金的相容性
参考答案:
两种或两种以上高分子,通过共混形成微观结构均一程度不等的共混物所具有的亲和性。
Teachers often tell their students _______ across the road when the traffic light is red.
A.not go
B.not to go
C.don’t go
D.didn’t go
为《花间集》作序的词人是()
A.温庭筠
B.欧阳炯
C.孙光宪
D.孟昶