单项选择题
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
A.the Matitime Code of China B.Certificate of Inspection C.Oil Transfer Procedures Manual D.IOPP Certificate
单项选择题 What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
单项选择题 What normally helps in detecting escaping gas? （）
单项选择题 What is used to test a tank for oxygen content?（）
