A.Equator
B.Areas including both North and South latitudes
C.North and South Poles
D.A narrow band along the central meridian
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A.NM
B.Ship's Routing
C.Colreg
D.Solas
A.Set
B.Frequency
C.Period
D.Function
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
最新試題
Restricted areas at locks and dams are indicated by（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
When entering a channel from seaward，the numbers on buoys（）.
In very high latitudes，the most practical chart projection is the（）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
What is a lighted safe water mark fitted with to aid in its identification（）.
Depiction of TSS's on charts uses（）as the primary color.
The four standard light colors used for lighted aids to navigation are red，green，white，and （）.
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.