A.under tow
B.fixed to the seabed
C.underway
D.All of the above
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A.destination
B.answer
C.time
D.ending
A.The motion of the apparent sun is along the ecliptic
B.Measurement of time is along the celestial equator
C.The speed of the Earth's revolution is not constant
D.There are variations in the Earth's rotational speed
A.Mine Safety Appliance Association
B.American Chemical Society
C.Marine Chemists Association
D.National Fire Protection Association
A.can be absorbed through the skin
B.causes irreversible damage to eye tissue
C.is a very unstable product
D.All of the above
A.dump valve
B.deflector
C.separator
D.diverter
最新試題
On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
Admiralty EasyTide（）.
The Lists of Meteorological Observation Stations can be found in（）.
Mean high water is the average height of（）.
The latest known details of lights are given in（）.
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
An inflatable liferaft is hand-launched by（）.