A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
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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
A.KEYLOCK
B.REPEATER
C.STATIC INVERTER
D.ANTI-CLUTTER-SEA
最新試題
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
A barometer showing falling pressure indicates the approach of a（）.
How is variation indicated on a small-scale nautical chart?（）.
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
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?（）
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
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（）.