单项选择题When carrying out a parallel track search pattern,the course of the search units should normally be which of the following ________.A.In the same direction as the anticipated driftB.In the opposite direction of the anticipated driftC.Perpendicular to the line of anticipated driftD.Downwind
单项选择题A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the ______.A.Fire hose might be damaged by cargo operationsB.Vessel is in portC.Fire-main system is not chargedD.Fire pumps are used for purposes other than supplying water to the fire main