A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only
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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
A.three barrels
B.four barrels
C.six barrels
D.eight barrels
最新試題
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
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Between 1830 hrs and 1850 hrs this day，strong gusty winds（）by my vessel，in consequence of which the vessel’s four mooring lines were broken.
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（）.
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.
A helmsman receives the command “Right 15 degrees rudder.”The helmsman’s IMMEDIATE reply should be（）.
A head-on situation at night is one in which you see dead ahead a vessel showing（）.
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
A safe fuel system must（）.
A fire pump may be used for other purposes if（）.