A.KEYLOCK
B.REPEATER
C.STATIC INVERTER
D.ANTI-CLUTTER-SEA
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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
A.persistence
B.pulse repetition rate
C.pulse length
D.rotation rate
A.carrier frequency
B.pulse repetition rate
C.pulse length
D.pulse repetition time
最新試題
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
An ECDIS is required to display which information?（）
An ECDIS is required to display which information?（）
（）is on the panel of radar.
Deviation in a compass is caused by the（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
A Doppler log in the bottom return mode indicates the（）.
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.
An electronic depth finder operates on the principle that（）.
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?（）.