A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
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A.tree or log awash in a nearly vertical position
B.crew member who refuses to work
C.upstream end of a land wall
D.buoy that is adrift
A.high pressure system
B.low pressure system
C.high dew point
D.low dew point
A.At
B.In
C.During
D.With
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
最新試題
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
（）is on the panel of radar.
An ECDIS is required to display which information?（）
An ECDIS is required to display which information?（）
An ECDIS is required to display which information?（）
A Doppler speed log indicates speed over ground（）.
An electronic depth finder operates on the principle that（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced?（）.
A radar display in which North is always at the top of the screen is a(n)（）.