How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）<br>A:De-energizes the "charged mist" effect<br>B:Maintains a positive pressure on the vent header to cool the flammable vapors<br>C:Inert gas filters out the flammable vapors from the cargo tank spaces<br>D:Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）
A:De-energizes the "charged mist" effect
B:Maintains a positive pressure on the vent header to cool the flammable vapors
C:Inert gas filters out the flammable vapors from the cargo tank spaces
D:Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

出自：海船船员证

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