单项选择题
Which one is the ‘clear grounds’ for a more detailed inspection?（）
A.paint peeling off the uptake B.no operation procedures for the oil separators C.one of ship’s certificates required is invalid D.damaged sanitary pump
单项选择题 Before the oily water is installed on board ships, it must have （）
单项选择题 The International Air Pollution Prevention Certificate (IAPP) is issued to（）
单项选择题 The International Sewage Pollution Prevention Certificate (ISPP) is issued to （）
