Compass error is equal to the（）.

A Doppler log in the bottom return mode indicates the（）.

A radar range to a small，charted object such as a light will provide a line of position in which form?（）.

What will NOT induce errors into a doppler sonar log?（）

A radar display which is oriented，so that north is always at the top of the screen，is called a(n)（）.

The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.

A Doppler log in the volume reverberation mode indicates（）.

A radar contact will remain stationary on a relative motion radar display only when it is（）.

A radar display in which North is always at the top of the screen is a(n)（）.

The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.