A.to
B.on
C.of
D.for
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A.off
B.reach
C.from
D.of
A.to
B.of
C.for
D.about
A.east two degrees
B.two degrees east
C.two east degrees
D.two-degrees east
A.astronomical observation
B.hydrographic survey
C.weather prediction
D.current sailing
A.ahead
B.astern
C.alongside my port bow
D.alongside my starboard bow
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（）is where the crew eat their meals.
What is it called when it is possible to ignite the vapour above the oil?（）
The circulation around a low pressure center in the Northern Hemisphere is（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
The loading of the ship must be done in accordance with（）.
（）is on the panel of radar.
A tide is called diurnal when（）.
Bales close to the deckhead should be covered to prevent（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.