单项选择题

When fighting an electrical fire, you should first （）.

A.stop ventilation to the area
B.stop the vessel
C.secure electricity to the circuit
D.apply CO₂to the fire

相关考题

You are transferring fuel from the storage tanks to the...

单项选择题You are transferring fuel from the storage tanks to the day tanks by means of an electric fuel oil transfer pumpIf the pump motor catches fire, you would FIRST （）.

A.secure the fuel manifold
B.shut off power to the pump
C.shut off the power ventilation
D.spray water on the fire

If the diesel fuel vapors present are within the flamma...

单项选择题If the diesel fuel vapors present are within the flammable range （）.

A.the vapor air mixture is too rich to burn
B.an explosion may occur if a source of ignition is present
C.the vapor air mixture is too lean to bum the upper explosive
D.limit has been exceeded

Before attempting to put out a class “C” fire involving...

单项选择题Before attempting to put out a class “C” fire involving an electric-driven centrifugal pump, you should FIRST （）.

A.insulate your shoes
B.ground the fire hose
C.secure its power supply
D.start the fire pump

船舶电气与船舶安全

When fighting an electrical fire, you should first （）.