A.Group flashing
B.Composite group flashing
C.Interrupted quick flashing
D.Fixed and flashing
您可能感興趣的試卷
你可能感興趣的試題
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 entering a channel from seaward，the numbers on buoys（）.
Which of the following are data layer categories to be displayed on ECDIS（）．
Depiction of TSS's on charts uses（）as the primary color.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
The equator is（）.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
The points on the earth’s surface where the magnetic dip is 90° are（）.
The four standard light colors used for lighted aids to navigation are red，green，white，and （）.