单项选择题
Which space(s) on your cargo vessel must have a fire detection system?（）
A.Any compartment containing explosives
B.Any compartment adjacent to one containing explosives
C.Enclosed spaces which are specially suitable for vehicles
D.All of the above
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Which precaution should be taken when testing a line throwing gun?（）
A.Never remove the line from the rocket
B.Fire it at an angle of approximately 90 degrees to the horizon
C.Wear asbestos gloves
D.All of the above -
单项选择题
Which portable fire extinguisher should be used on a class C fire on board a vessel?（）
A.Carbon dioxide
B.Water (stored pressure)
C.Foam
D.Carbon tetrachloride -
单项选择题
Which portable fire extinguisher is normally recharged in a shore facility?（）
A.Dry chemical (cartridge-operated)
B.Water (cartridge-operated)
C.Water (pump tank)
D.Carbon dioxide
