单项选择题

Thermoset polymers are generally harder and stronger than thermoplastics and have better dimensional stability.

A.正确
B.错误
<上一题 目录 下一题>
热门 试题

单项选择题
Thermoplastics are mainly prepared by addition polymerization.
A.正确
B.错误
单项选择题
Poly(1,4-cis-butadiene) has a higher Tg than Poly(1,4-trans-butadiene) because the cis -form reduces the energy barrier for rotation of adjacent bonds.
A.正确
B.错误
相关试题