A、Captain.
B、Bosun.
C、Chief officer.
D、Chief engineer.
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A、At the head of the tow B、75m from the head of the tow C、120m from the head of the tow D、180m from the head of the tow
A、The captain is the head of a ship. B、The master is the head of a ship. C、The deck department is under the command of the chief officer. D、The pilot is the head of a ship.
A、turning the victims's head to the side to keep his airway open B、positioning the victim so the head is lower than the body C、giving the victim water if he is thirsty，but no food D、elevating the head and shoulders slightly with a pillow
A、turning the victim's head to the side to keep his airway open B、positioning the victim so the head is lower than the body C、giving the victim water if he is thirsty，but no food D、elevating the head and shoulders slightly with a pillow
A、A.turning the victim's head to the side to keep his airway open B、B.positioning the victim so the head is lower than the body C、C.giving the victim water if he is thirsty，but no food D、D.elevating the head and shoulders slightly with a pillow
A、Suction head B、Pump head C、Discharge head D、Total head
A、distance of the suction liquid level above the line of the pump B、distance the suction liquid level is below the center line of the pump C、force necessary to overcome frictional losses in the pump and piping D、amount in inches of mercury the total suction head is below atmospheric pressure
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