单项选择题

The necessity for administering artificial respiration may be recognized by the victims （）.

A.vomiting
B.blue color and lack of breathing
C.irregular breathing
D.unconscious condition

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单项选择题

Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?（）

A.Commence draining that tank as quickly as possible
B.Seal off all vents to that tank
C.Activate the CO₂ system to that tank
D.Shut off the steam heating coils

单项选择题

The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.

A.secure all openings to the tank
B.discharge an initial charge of CO₂with a hand portable extinguisher
C.direct a fire hose into the tank and energize the fire main
D.spray the tank boundaries with a fire hose to promote cooling

单项选择题

In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.

A.secure all sources of fresh air to the tank
B.begin transferring the fuel to other tanks
C.top off the tank to force out all vapors
D.station someone at the fixed CO₂release controls