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
您可能感興趣的試卷
你可能感興趣的試題
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
A.poor fix
B.good fix
C.poor signal quality
D.good signal quality
A.on an even keel
B.listing about 1° to the side the light is displayed on
C.listing over 5° With the light displayed on the high side
D.listing，and the chutes should be directed to the side where the light is displayed
最新試題
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
The international number，location and/or name，geographical co-ordinates，characteristics and intensity，elevation in metres，range in sea miles and description of structure of a light can be found in（）.
A person who sees someone fall overboard should（）.
The information on ocean voyage planning with routeing details for powered and sailing vessels is likely found in（）.
An inflatable liferaft is hand-launched by（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
Mean high water is the average height of（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
Mariners not entering the port are（）to keep at least one mile off.
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（）.