After vulcanization, there are still many carbon-carbon double bonds in the molecular chains of natural rubber.
After vulcanization, there are still many carbon-carbon double bonds in the molecular chains of natural rubber.
A.正确
B.错误
正确答案:正确
After vulcanization, there are still many carbon-carbon double bonds in the molecular chains of natural rubber.
A.正确
B.错误
正确答案:正确
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