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
Which statement concerning current is TRUE（）.
The points on the earth’s surface where the magnetic dip is 90° are（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
The recording fathometer produces a graphic record of the（）.
You should plot your dead reckoning position（）.
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.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
What is a lighted safe water mark fitted with to aid in its identification（）.
Traffic separation schemes adopted by the IMO are listed in（）.
Which of the following are data layer categories to be displayed on ECDIS（）．