该句逗号是否使用正确:Oneofthemainchallengesencounteredbytherefiningindustryworldwide,isthedeteriorationinfeeds

8 查阅

该句逗号是否使用正确:Oneofthemainchallengesencounteredbytherefiningindustryworldwide,isthedeteriorationinfeedstockqualityandtheintroductionofheavycrudeoils.

A.正确

B.错误

参考答案:

答案:错误