A.fore-and-aft and athwartships magnets
B.dip needle and heeling magnet
C.heeling magnet and Flinders bar
D.Flinders bar and quadrantal spheres
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A.Decreasing loran readings on 9960-W
B.Visual bearings of Montauk Point Lt. changing to the left
C.Increasing bearings of Southeast Point Light
D.Decreasing soundings
A.enter a traffic separation zone
B.cross a submerged pipeline
C.depart a regulated area
D.depart a restricted area
A.spider element
B.sensitive element
C.link arm
D.pickup transformer
A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran
A.make
B.be made
C.not make
D.not be made
最新試題
（）is not a factor which will affect the accuracy of GPS receiver.
To obtain accuracy in fixing by DF，（）and three stations should be used.
Automatic identification systems（AIS）are required to（）.
Loran-C uses the multiple pulse system because（）.
You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made（）.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
What does not contribute to the commercial GPS receiver position error（）.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
If the radio signal ground wave extends out for less distance than the minimum skywave distance，there is an area in which no signal is received．This is called the（）.