A.Flinders bar first，then the heeling magnet and spheres
B.Heeling magnet first，then the Flinders bar and spheres
C.Flinders bar first，then the spheres and heeling magnet
D.Spheres first，then the Flinders bar and heeling magnet
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A.Switch
B.To switch
C.Switched
D.Will switch
A.My using
B.I use
C.To use
D.I will use
A.Rate of turn
B.Latitude and longitude
C.Navigational status
D.All of the above
A.Call sign and IMO number
B.Course over ground and MMSI
C.MMSI number and call sign
D.Route Plan and navigational status
A.A decreasing reading on loran pair 9960-X
B.The bearing of Wolf Trap Light changing to the right
C.Increasing soundings
D.The bearing of Wolf Trap Light changing to the left
最新試題
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
Loran-C is which type of system（）.
Which one of the followings does not limit the effective range of radar（）.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
The（）transmits own ship data cyclically via two defined VHF channels and receives the same data of the other ships and objects that are equipped with AIS systems.
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（）.
The information received by AIS will be displayed on（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.