A.enter a traffic separation zone
B.cross a submerged pipeline
C.depart a regulated area
D.depart a restricted area
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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
A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port
A.spider element
B.mercury ballistic
C.gyrotron
D.rotor
最新試題
Loran-C uses the multiple pulse system because（）.
Would you mind（）your DF?
When your vessel is proceeding to the area of traffic density，（）is used to determine the exact ranges of other ships or objects in the vicinity.
In using Loran-C，skywave reception gives greater range but is（）.
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.
The operation of which aids to navigation may be suspended during war or national emergency（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
The loran lines drawn on navigation charts represent（）.
Would you please（）on the radar?
Which one of the followings does not limit the effective range of radar（）.