A.on the same course as your vessel
B.at the same speed as your vessel
C.on the same course and speed as your vessel
D.on a reciprocal course at the same speed as your vessel
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A.Separated line
B.Divided line
C.Reference line
D.Segregated line
A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
A.speed being made good
B.speed through the water
C.the set of the current
D.the depth of the water
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
A.tree or log awash in a nearly vertical position
B.crew member who refuses to work
C.upstream end of a land wall
D.buoy that is adrift
最新試題
Deviation is the angle between the（）.
A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.
An ECDIS is required to display which information?（）
The minimum range at which a target can be detected is basically determined by which of the following?（）.
A radar display in which North is always at the top of the screen is a(n)（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
A barometer showing falling pressure indicates the approach of a（）.
An ECDIS is required to display which information?（）
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.