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
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单项选择题
While you are working in a space，the fixed CO2 system is accidentally activated．You should（）.
A.Secure the applicators to preserve the charge in the cylinders
B.Continue with your work as there is nothing you can do to stop the flow of CO2
C.Retreat to fresh air and ventilate the compartment before returning
D.Make sure all doors and vents are secured -
单项选择题
Which statement is TRUE concerning the gooseneck（）.
A.It is a sailing maneuver which brings the vessel's head through the wind
B.It connects the boom to the mast and allows the boom to swing freely
C.It is a sailing condition where there is a loss of air flow over the sails
D.None of the above -
单项选择题
Which cargo is considered volatile（）.
A.Bunker C
B.Turkey-red oil
C.Sweet oil
D.Iso-Propylamine
