单项选择题 All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible（） to prevent such pollution, particularly within the framework of relevant international and port regulations.

单项选择题 Duties shall be so organized by the chief engineer officer that the first watch at the commencement of a voyage and the subsequent relieving watches are （） and otherwise fit for duty.

单项选择题 To ensure the safe operation of each ship and to provide a link between the Company and those on board, every Company, as appropriate, should designate a person or persons ashore having direct （） to the highest level of management.