A.speed being made good
B.speed through the water
C.the set of the current
D.the depth of the water
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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
A.high pressure system
B.low pressure system
C.high dew point
D.low dew point
A.At
B.In
C.During
D.With
A.Gain Control
B.Brilliant Control
C.Anti-clutter Sea Control
D.Sweep Intercept
最新試題
A Doppler speed log indicates speed over ground（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.
Deviation in a compass is caused by the（）.
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?（）.
What will NOT induce errors into a doppler sonar log?（）
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 indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes?（）.
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.