A.As many as
B.So many as
C.As much as
D.As more as
您可能感興趣的試卷
你可能感興趣的試題
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
A.magnetron
B.receiver
C.indicator
D.modulator
最新試題
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?（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
An ECDIS is required to display which information?（）
A deadhead is a(n)（）.
A barometer showing falling pressure indicates the approach of a（）.
The minimum range at which a target can be detected is basically determined by which of the following?（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.