A.Straight line
B.Arc
C.Parabola
D.Hyperbola
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A.relative display
B.composite display
C.stabilized display
D.unstabilized display
A.unstabilized display
B.stabilized display
C.composition display
D.relative display
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
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
最新試題
An electronic depth finder operates on the principle that（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.
The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.
An ECDIS is required to display which information?（）
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
A Doppler speed log indicates speed over ground（）.
How is variation indicated on a small-scale nautical chart?（）.
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（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.