单选题In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.Asecure all sources of fresh air to the tankBbegin transferring the fuel to other tanksCtop off the tank to force out all vaporsDstation someone at the fixed CO2 release controls
单选题
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 CO2 release controls
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相关考题：
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The fire extinguishing action of CO 2 comes mostly from ______.A.breaking the fire chemical chain reactionB.smotheringC.coolingD.isolating the heat from the fuel
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