A.frequent opening of hatches to permit entry of fresh air
B.regular checks of bilge levels
C.use of ear plugs to dampen engine noise
D.frequent flushing of the water spray system with fresh water
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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
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
最新試題
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
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 ocean voyage planning with routeing details for powered and sailing vessels is likely found in（）.
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（）.
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（）.