After a fire has been extinguished in a closed space, personnel may safely enter the space when ().

A . smoke density has been decreased sufficiently to see the bulkhead opposite the compartments entrance B . a lifeline and explosion proof flash light are used C . all smoke and toxic fumes are removed and an adequate oxygen supply is present D . overhaul has been completed to remove any possible source of re-ignitio

时间:2022-10-11 00:12:15 所属题库:船舶电气与船舶安全题库

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