A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
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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
A.at the bow
B.at the stern
C.in the middle
D.all around
最新試題
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
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 information on（）is not likely found in The Mariners Handbook.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
Aboard a survival craft，ether can be used to（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
Admiralty EasyTide（）.