以乙烯为基础的弹性体有哪些?
参考答案:
氯化聚乙烯(CPE)、氯磺化聚乙烯(CSM)、乙烯与醋酸乙烯酯的共聚体(EVA)。
— Do you like our English teacher?
— Yes. ______ I learn from her, ______ I like her. [ ]
A. Longer; more
B. The longer; the more
C. The longer; more
D. Longer; the more