A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?()

A . The tank is safe to enter B . The tank is especially dangerous to enter C . Carbon monoxide is present D . Water vapor present when the tank was sealed has oxidized

时间:2022-10-20 20:22:28 所属题库:船舶电气与船舶安全题库

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