A.At
B.In
C.During
D.With
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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
A.As many as
B.So many as
C.As much as
D.As more as
A.Increased draft
B.Pitch
C.Roll
D.Change in trim
A.one-millionth part of a second
B.one-thousandth part of a second
C.one-hundredth part of a second
D.one-tenth part of a second
最新試題
Deviation in a compass is caused by the（）.
A Doppler speed log indicates speed over ground（）.
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
Error may be introduced into a magnetic compass by（）.
How is variation indicated on a small-scale nautical chart?（）.
What will NOT induce errors into a doppler sonar log?（）
（）is on the panel of radar.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
The number of pulses of energy transmitted per second is call the（）.
Deviation is the angle between the（）.