
Which one (s) of the following is or are correct?
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Which one (s) of the following is or are correct?
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
正确答案:Isotactic and syndiotactic polymers possess stereo-regular structures;Isotactic and syndiotactic polymers are rigid, crystallizable, high melting, and relatively insoluble
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
正确答案:Isotactic and syndiotactic polymers possess stereo-regular structures;Isotactic and syndiotactic polymers are rigid, crystallizable, high melting, and relatively insoluble
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