A.glycerineB.graphiteC.keroseneD.fresh water and soapTo……

单项选择题To determine if a CO2 fire extinguisher is fully charged，you would（）.

A.Operate the trigger valve
B.Weigh the extinguisher
C.Test with a pressure gauge
D.Read the date of last test

单项选择题There is a fire in the crew’s quarters of your vessel. You should（）.

A.ventilate the quarters as much as possible
B.prepare to abandon ship
C.close all ventilation to the quarters if possible
D.attempt to put the fire out yourself before sounding the alarm

单项选择题There is a fire aft aboard your vessel. To help fight the fire，you should（）.

A.put the wind off either beam
B.head the bow into the wind and decrease speed
C.put the stern into the wind and increase speed
D.put the stern into the wind and decrease speed

单项选择题There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.

A.the lack of cooling effect on heated materials
B.that it cannot be used in a dead ship situation with no electrical power to the CO₂ pump
C.that it breaks down under extreme heat to form poisonous gases
D.there is no effect on a class A fire even in an enclosed space

单项选择题The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.

A.pump from the damaged tank
B.fight a fire
C.abandon the rig
D.use the crossover system