單項(xiàng)選擇題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


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

3.單項(xiàng)選擇題Which item is NOT included in the fireman’s outfit on a cargo vessel?（）

A.Fire ax
B.Flashlight
C.rigid helmet
D.Fresh air breathing apparatus

4.單項(xiàng)選擇題Which is a disadvantage of Halon as a fire extinguishing medium?（）

A.Conducts electricity
B.Difficult to store
C.Large volume necessary to be effective
D.Ineffective in powdered metal fires

5.單項(xiàng)選擇題Which firefighting method is an example of an indirect attack on a fire?（）.

A.Bouncing a straight stream of water off the overhead to create spray effect
B.Spraying foam on a bulkhead and letting it flow down and over a pool of burning oil
C.Flooding a paint locker with CO2 and sealing the compartment
D.Cooling adjacent bulkheads with water to prevent the spread of the fire by conduction