A.at anchor
B.being towed
C.aground
D.drilling
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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
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
最新試題
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
Aboard a survival craft，ether can be used to（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
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 launching，an inflatable raft should be kept dry inside by（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
An inflatable liferaft should be manually released from its cradle by（）.