Each hand portable fire extinguisher on a ship must be marked with（）.
1、All portable fire extinguishers must b
All portable fire extinguishers must be capable of being（）.Acarried by hand to a fireBcarried or rolled to a fireCrecharged in the fieldDused on class "B" fire
2、Portable foam type fire extinguishers
Portable foam type fire extinguishers are most effective on（）.Amattress firesBoil firesCwood firesDAll of the above
3、Which portable fire extinguisher shoul
Which portable fire extinguisher should be used on a class C fire on board a vessel?（）ACarbon dioxideBWater (stored pressure)CFoamDCarbon tetrachloride
4、Foam-type portable fire extinguishers
Foam-type portable fire extinguishers are most useful in combating fires involving（）.Asolid materials such as wood or bales of fiberBflammable liquidsCelectrical equipmentDmetallic solid
5、Portable CO2 fire extinguishers should
Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.Athe CO2 being inhale...
6、Foam-type portable fire extinguishers
Foam-type portable fire extinguishers are more usefull in combating fires involving（）.Asolid materials such as wood or bales of fiberBinflammable liquidsCelectrical equipmentDmetallic solid