该句逗号是否使用正确：One of the main challenges encountered by the refining industry worldwide, is the deterioration in feedstock quality and the introduction of heavy crude oils.
举一反三
- 该句逗号是否使用正确：One of the main challenges encountered by the refining industry worldwide, is the deterioration in feedstock quality and the introduction of heavy crude oils. A: 正确 B: 错误
- One thing is certain, as the competition increases, worldwide reputation for quality and service will _____ for a company.
- One main purpose of a speech of introduction is to __________.
- Company A exported 5 metric tons of tea .The tea suffered heavy storm in transit .The sea water in the ship 's hold led to the deterioration in the quality of part of the tea exported .This kind of loss is __.
- 判断该句说法是否正确。 句号、问号、叹号、逗号、顿号、分号、冒号都属于点号