A、A.steel surfaces consume oxygen by rusting
B、B.sealed tanks usually form a vacuum
C、C.moisture condenses in the tank, displacing the oxygen
D、D.most tank coatings give off poisonous vapors in the presence of moisture
更多“A tank which has been sealed for a long period of time can be dangerous because （）.”相关的问题
A、condensation in the fuel tank B、a crack in the hull portion of the fuel tank C、a load of bad fuel D、contamination from the saltwater flushing system
A、A.The tank is safe to enter B、B.The tank is especially dangerous to enter C、C.Carbon monoxide is present D、D.Water vapor present when the tank was sealed has oxidized
A、Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned B、The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank C、The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue D、Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
A、Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned B、The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank C、The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue D、Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
A、an air leak has developed in the tank B、the tank cooling system has malfunctioned C、the pilot cylinder discharge valve is leaking D、an excessive amount of insulation has been installed on the tank and piping
A、an air leak has developed in the tank B、the tank cooling system has malfunctioned C、the pilot cylinder discharge valve is leaking D、an excessive amount of insulation has been installed on the tank and piping
A、The supervisor in charge of the dock to which the barge is tied up B、Part 38 of the Rules and Regulations for Tank Vessels C、The Certificate of Inspection of the barge D、The local fire marshal
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