A.has little use for ocean-going mariners
B.permits the mariner to select and simultaneously calculate tidal heights for multiple ports for up to seven days
C.includes periods of daylight and nautical twilight，moon phases and a springs and neaps indicator
D.is supplied in the form of a single CD which contains the calculation program and the seven geographic Area Data Sets（ADS）providing global coverage
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A.start the engine in cold weather
B.aid in helping personnel breathe
C.prime the sprinkler system
D.prime the air supply
A.Distress position
B.Spoken words“Mayday，Mayday，Mayday”
C.Ship's name
D.Ship's call letters
A.generally shorter than the others and is used to steer with
B.is longer than the others and is used as the stroke oar
C.is raised in the bow of the boat for the steersman to steer by
D.longer than the others used for steering
A.immediately jump in the water to assist the individual
B.go to the bridge for the distress flares
C.run to the radio room to send an emergency message
D.call for help and keep the individual in sight
A.danger，stay away
B.all is clear，it is safe to pass
C.all is clear，it is safe to approach
D.a distress signal
最新試題
The light vessel is reported（）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
The latest known details of lights are given in（）.
A sweep oar is an oar that is（）.
Mariners not entering the port are（）to keep at least one mile off.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
The Lists of Meteorological Observation Stations can be found in（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
The information on（）is not likely found in The Mariners Handbook.
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（）.