A.north side of the mark
B.west side of the mark
C.east side of the mark
D.south side of the mark
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A.left-side buoy
B.right-side buoy
C.a buoy of safety
D.a buoy of danger
A.anchorage area
B.fish net area
C.bifurcation
D.dredging area
A.white light FL (2) and a topmark of 2 black spheres
B.occulting green light and may be lettered
C.yellow light and will be numbered
D.continuous quick white light and may be numbered
A.interrupted quick flashing
B.composite group flashing
C.Morse (A)
D.quick flashing
A.with part of it extending above the water
B.that can be detected by water turbulence
C.that drops off sharply
D.perpendicular to the current
最新試題
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（）.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
In very high latitudes，the most practical chart projection is the（）.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
What is a lighted safe water mark fitted with to aid in its identification（）.
Restricted areas at locks and dams are indicated by（）.
Which of the following are data layer categories to be displayed on ECDIS（）．
The equator is（）.