A.windward side
B.leeward side
C.safe semicircle
D.dangerous semicircle
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A.is used mostly by towing vessels
B.has a maximum depth of 14 feet (4.3 meters) at MHW
C.West Gap has a controlling depth of 24 feet
D.is entered through the East Gap or the West Gap
A.installing rat guards on the mooring lines when in port
B.keeping foods protected and avoiding the accumulation of garbage
C.eliminating possible living spaces for rats when the ship is constructed
D.trapping and/or poisoning the rats
A.Greenish
B.Bluish
C.Grey
D.Grey-white
A.around the rudder and screws
B.completely around the vessel
C.to leeward of the vessel
D.to windward of the vessel
A.11 seconds
B.15 seconds
C.20 seconds
D.22 seconds
最新試題
One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.
The preferred method of controlling external bleeding is by（）.
Which change in the condition of the seas could indicate the formation of a tropical storm or hurricane several hundred miles from your location? （）
When taking soundings on a floating ship，the tape should be lowered and brought back quickly to（）.
The distance between rivets in a row is known as the（）.
The distance that a ship moves forward with each revolutionof its propeller，if there is no slip，is called（）.
The angular movement of a vessel about a horizontal line drawn from its bow to its stern is （）.
When preparing a ship for heavy weather，fuel oil day tanks should be（）.
To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.