该句逗号是否使用正确：Oneofthemainchallengesencounteredbytherefiningindustryworldwide,isthedeteriorationinfeedstockqualityandtheintroductionofheavycrudeoils.
该句逗号是否使用正确：Oneofthemainchallengesencounteredbytherefiningindustryworldwide,isthedeteriorationinfeedstockqualityandtheintroductionofheavycrudeoils.
A.正确
B.错误
正确答案：错误