A.Set
B.Frequency
C.Period
D.Function
您可能感興趣的試卷
你可能感興趣的試題
A.bottom contour only up to depths of 100 fathoms
B.depth underneath the keel against a time base
C.contour of the bottom against a distance base
D.depth of water against a distance base
A.Along the magnetic equator
B.Connected by the isoclinal line
C.The isopors
D.The magnetic poles
A.purple
B.orange
C.blue
D.yellow
A.the primary great circle of the Earth perpendicular to the axis
B.the line to which all celestial observations are reduced
C.the line from which a celestial body's altitude is measured
D.All of the above
A.Flashing red lights upstream and fixed red lights downstream
B.Yellow unlighted buoys
C.Signs and/or flashing red lights
D.Red daymarks upstream and green daymarks downstream
最新試題
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
（） is not likely to be a methods of Traffic Separation.
Restricted areas at locks and dams are indicated by（）.
When entering a channel from seaward，the numbers on buoys（）.
The equator is（）.
When navigating a vessel，you（）.
When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.