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单选题
Aids to navigation marking the intracoastal waterway can be identified by（）.
A
the letters ICW after the aid's number or letter
B
yellow stripes，squares，or triangles marked on them
C
white retroreflective material
D
the light characteristic and color for lighted aids
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You are sailing south on the Intracoastal Waterway（ICW）when you sight a green can buoy with a yellow square painted on it．Which of the following is TRUE ________．A.You should pass the buoy close aboard on either sideB.The buoy marks the end of the ICW in that areaC.You should leave the buoy to portD.The yellow square is retroreflective material used to assist in sighting the buoy at night
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单选题I can not take any actions to avoid close quarters situation with you，because your navigation lights（）.A
is not visibleB
are not invisibleC
are not visibleD
can easily be seen
考题
单选题The number or name of a tank barge shall be（）.A
displayed in at least 4 different positions on the bargeB
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单选题No damage of any kind（）aids to navigation or navigation facilities.A
should be done toB
should not be done toC
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考题
单选题Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.A
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单选题Public address system: loudspeakers in the vessel’s cabins, mess rooms, ETC., and on deck via which important information can bebroadcast from a central point, mostly from the navigation bridge defines（）.A
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PA-systemC
AP-systemD
AA-system
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channel junctionsB
bifurcationsC
fishing trapsD
wrecks or obstructions
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单选题Defense plans may cause the operation of electronic aids to navigation to be suspended with （）.A
no noticeB
one day's noticeC
a week's noticeD
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Sailing DirectionsB
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True bearings as observed from the ship toward the lightC
An outline of the area of the sectorD
True bearings as observed from the light toward the ship
考题
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OmegaD
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考题
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考题
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考题
单选题The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboard side of a vessel（）.A
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descending the riverC
crossing the riverD
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考题
单选题The four standard light colors used for lighted aids to navigation are red，green，white，and （）.A
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考题
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for precise navigation in coastal watersB
by measuring the phase difference of the dots and dashesC
as an aid to ocean navigationD
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考题
单选题Which statement about satellite navigation is TRUE? （）A
While a fix can be generated by signals received from two satellites，three satellites are necessary for reliable accuracyB
The satellites are in equatorial orbits around the earth about 60°of longitude apartC
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The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking
考题
单选题Mariners are FIRST warned of serious defects or important changes to aids to navigation by means of（）.A
marine broadcast Notice to MarinersB
Weekly Notices to MarinersC
corrected editions of chartsD
Light Lists
考题
单选题When out of sight of land, a ship’s position can be found by using（）.A
the coastal navigationB
the celestial navigationC
traditional navigationD
the great circle navigation
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