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
An inflatable liferaft should be manually released from its cradle by（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
A person who sees someone fall overboard should（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
The latest known details of lights are given in（）.
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（）.
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（）.
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 Coast Radio Stations are found in（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.