单项选择题 In some cases facilities may be provided for emergency overriding oil pressure shutdown, if this facility is used, adequate warning must be given to （）.

单项选择题 At an unsheltered anchorage the chief engineer officer shall consult with （） whether or not to maintain an underway watch.

单项选择题 The Oil Record Book, as a part of the ships official logbook, shall be kept on board and preserved for a period of （）.