A.When the towing vessel enters the fog
B.When the drilling rig enters the fog
C.When the towing vessel can no longer be seen from the rig
D.Immediately
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A.under tow
B.fixed to the seabed
C.underway
D.All of the above
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
最新試題
After jacking down your liftboat you have an unexpected list.You find that the only cause of this list must be a flooded leg.Your next course of action should be to（）.
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（）.
The Lists of Meteorological Observation Stations can be found in（）.
An inflatable liferaft should be manually released from its cradle by（）.
Aboard a survival craft，ether can be used to（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
Admiralty EasyTide（）.
A person who sees someone fall overboard should（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.