Polyurethanes can be which of the following (more than one):thermoplasticthermosettingelastomeric
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Polyurethanescanbewhichofthefollowing(morethanone):thermoplasticthermosettingelastomericPolyurethane
Polyurethanes can be which of the following (more than one):thermoplasticthermosettingelastomeric
Polyurethanes can be which of the following (more than one):
thermoplastic
thermosetting
elastomeric
Polyurethanes can be which of the following (more than one):thermoplasticthermosettingelastomeric
以下几种属于聚氨基甲酸酯/聚氨酯的是(不止一项)：
热塑性塑料
【化】热固的
合成橡胶
大体这意思,太专业了
到底哪个是,我也不清楚……
Polyurethanes can be which of the following (more than one):thermoplasticthermosettingelastomeric
can be
Can be tough,Can be strong.
can be.must be区别may be
can we be friends?
how can that be?
how can it be..
You can be beautiful
I can be your
how can be
how can that be
I am can be
You can be heartless
can we be friends.
Ah ......I can be
it can be done
as can be
There Can Only Be