The formation of cross-linked structures in synthetic rubbers is usually called vulcanization. After vulcanization, there are still many carbon-carbon double- bonds in the molecular chains of natural rubber.

The formation of cross-linked structures in synthetic rubbers is usually called vulcanization. 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