A.all-round yellow light only
B.all-round white light only
C.all-round blue light only
D.alternating red and yellow light
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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
A.working on the rig floor
B.working over water
C.working on the pipe racks
D.operating line throwing equipment
最新試題
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
An orange flag showing a black circle and square is a（）.
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（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
Mean high water is the average height of（）.
A sweep oar is an oar that is（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
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（）.
After launching，an inflatable raft should be kept dry inside by（）.