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
The number of pulses of energy transmitted per second is call the（）.
A radar display in which North is always at the top of the screen is a(n)（）.
An ECDIS is required to display which information?（）
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
An ECDIS is required to display which information?（）
A Doppler log in the bottom return mode indicates the（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
A deadhead is a(n)（）.
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?（）.
What will NOT induce errors into a doppler sonar log?（）