单项选择题
You are transporting dangerous cargo on your vessel．You must inspect this cargo（）.
A.Daily B.Daily，at sea only C.After encountering rough weather D.After loading and prior to arrival in port only
单项选择题 While you are working in a space，the fixed CO2 system is accidentally activated．You should（）.
单项选择题 Which statement is TRUE concerning the gooseneck（）.
单项选择题 Which cargo is considered volatile（）.
