All items such as steam pipes, exhaust pipes and fittings which, because of their location and operating temperature, present a hazard should be adequately lagged.That means the items should()

A . not be put into operation too early B . be pay adequate attention to C . be used only when necessary D . be coated with certain material

时间:2022-11-05 12:16:31 所属题库:船舶电气与船舶安全题库

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