航海英语海上消防单项选择题每日一练(2019.01.24)

单项选择题
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
A.closing the compartment except for the ventilators
B.completely closing the compartment
C.leaving the compartment open to the air
D.increasing the air flow to the compartment by blowers
单项选择题
Automatic fire dampers in ventilation systems are operated by a（）.
A.remote operated valve
B.fusible link
C.CO₂ system pressure switch
D.heat or smoke detector
单项选择题
An effective method for moving patients with spinal injuries onto a spine board is known as the（）.
A.pack-strap carry
B.two man extremities carry
C.fireman's drag
D.four man log roll
单项选择题
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
A.solid materials such as wood or bales of fiber
B.inflammable liquids
C.electrical equipment
D.metallic solids
单项选择题
All of the following are part of the fire triangle EXCEPT（）.
A.electricity
B.fuel
C.oxygen
D.heat