A.with
B.in
C.to
D.on
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A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only
A.operation of electrical equipment and generators on board ship
B.the earth's magnetic field affecting the ship's hard iron during construction
C.the horizontal component of the earth's magnetic field acting on the horizontal soft iron
D.the vertical component of the earth's magnetic field acting on the vertical soft iron
A.Appendicitis
B.Cholera
C.Plague
D.Typhus fever
A.Jaundice by fever
B.Acute skin rash or eruption with or without fever
C.Duodenitis
A.Drape along brackets
B.Leave in place while back loading cargo to save time
C.Hang vertically in the paint locker
D.All of the above
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A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
A safe fuel system must（）.
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
A jack-up drilling rig being towed must（）.
An inert gas system installed on a tanker is designed to（）.
An obstruction on a helodeck is any object that might present a hazard to the（）.
A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.