题目
第1题
A.Thermoplastic polymers
B.Thermosetting polymers
C.Saturated polymers
D.Unsaturated polymers
第3题
A.Isotactic and syndiotactic polymers possess stereo-regular structures
B.Atactic and isotactic polymers possess stereo-regular structures
C.Isotactic and syndiotactic polymers are rigid, crystallizable, high melting, and relatively insoluble
D.Atactic polymers are rigid, crystallizable, high melting, and relatively insoluble
第5题
A.Poly(vinyl chloride)
B.Polystyrene
C.Polytetrafluoroethylene
D.Polyimide
第7题
A.Polyethylene
B.Nylon
C.Phenolics
D.Polystyrene
第8题
A.Metal
B.Ceramics
C.Composite
D.Polymers
第9题
第10题
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