A.Group flashing
B.Composite group flashing
C.Interrupted quick flashing
D.Fixed and flashing
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A.Red buoy with a horizontal yellow band
B.Red and white vertically-striped buoy with a vertical yellow stripe
C.Red and white vertically-striped buoy with a red spherical topmark
D.Green buoy with a yellow square
A.Dead-reckoning position
B.Estimated position
C.Fix
D.Running fix
A.encountered
B.met
C.contacted
D.seen
A.the differing light colors
B.one system having odd numbers while the other system has even numbers
C.one system using horizontal bands while the other system uses vertical stripes
D.the difference in the periods of the light
A.the light-house
B.the anchorage
C.the pilot station
D.the light-buoy
最新試題
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
Which buoy will NOT display white retro reflective material（）.
What is a lighted safe water mark fitted with to aid in its identification（）.
What is an ebb current（）.
How would you pass a red buoy in the maritime buoyage system“A” （）.
Which statement concerning current is TRUE（）.
When latitude and longitude are used，these shall be expressed in（）（and decimals of a minute if necessary），north or south of the Equator and east or west of Greenwich.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
What describes a flood current（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.