A.two red lights
B.one green light
C.one white light
D.one amber light
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A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
A.straight line
B.arc
C.parabola
D.hyperbola
A.all-round yellow light only
B.all-round white light only
C.all-round blue light only
D.alternating red and yellow light
A.I am in doubt as to your actions
B.My engines are full speed astern
C.I desire to overtake you
D.I am operating astern propulsion
A.should be righted by standing on the carbon dioxide cylinder，holding the righting straps and leaning backwards
B.should be righted by standing on the life line，holding the righting straps leaning backwards
C.will right itself when the canopy tube inflates
D.must be cleared of the buoyant equipment before it will right itself
最新試題
Light Lists for coastal waters are（）.
Mariners not entering the port are（）to keep at least one mile off.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.
An inflatable liferaft is hand-launched by（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
The Lists of Meteorological Observation Stations can be found in（）.
After being rescued from the vessel accident，the people agreed that they had much to（）.