A.port and starboard strings
B.outer strings
C.drag strings
D.side strings
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A.a mechanical breakdown on the tug
B.adverse tidal current conditions
C.the tug reducing its speed
D.All of the above
A.celestial meridian
B.celestial equator
C.celestial horizon
D.principal vertical circle
A.south celestial pole
B.north celestial pole
C.observer's meridian
D.Greenwich meridian
A.transmit the thrust of the engine to the propeller
B.transmit the thrust of the propeller to the vessel
C.absorb the shock of wave pressure at the bow
D.be placed between the engines and the foundation to absorb the vibration
A.altostratus
B.stratus
C.cumulus
D.cirrus
最新試題
A tow that is properly aligned to pass through a narrow opening between two bridge piers is “ （）”.
A slow，gradual fall of the barometer indicates approaching（）.
A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.
A time diagram is a diagram on the plane of the（）.
A tug may be in danger of tripping when（）.
A traffic separation zone is that part of a traffic separation scheme which（）.
A thin，whitish，high cloud popularly known as “mares’ tails” is（）.
A stage should only be rigged（）.
A tackle is “two blocked” when the blocks are（）.
A vertex of the navigational triangle is NOT located at the（）.