A.straight line
B.arc
C.parabola
D.hyperbola
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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
A.a painter
B.red smoke flares
C.a jackknife
D.a signal mirror
最新試題
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
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（）.
The latest known details of lights are given in（）.
A person who sees someone fall overboard should（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
Mean high water is the average height of（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.
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（）.