单项选择题
（）is not a process of weathering of the oil spilled in the sea water.
A.Biodegradation B.Dissolution C.Cleaning up by crew with skimmers D.Oxidation including photooxidation
单项选择题 The supplement to the IOPP Certificate contains what type of data? （）
单项选择题 A 30，000 DWT tanker is required to have an IOPP certificate when（）
单项选择题 Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
