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
Deviation is the angle between the（）.
（）the canal transit，the radar was operating.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.
Error may be introduced into a magnetic compass by（）.
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
A Doppler log in the volume reverberation mode indicates（）.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
Deviation in a compass is caused by the（）.
The number of pulses of energy transmitted per second is call the（）.