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A dead reckoning (DR) plot ______.
A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel’s position is fixed
参考答案
更多 “ A dead reckoning (DR) plot ______.A.must utilize magnetic coursesB.must take set and drift into accountC.should be replotted hourlyD.should be started each time the vessel’s position is fixed ” 相关考题
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During a recent OSPF election among three routers, RTA was elected the DR and RTB was elected the BDR, as seen in the graphic. Assume that RTA fails, and that RTB takes the place ofthe DR whi le RTC becomes the new BDR. What will happen when RTA comes back online？（）A. A new election will take place establishing an all new DR and BDR based on configured priority levels and MAC addresses.B. RTA will take the place of DR immediately upon esta blishing its adjacencies.C. RTA will take the place of DR only if RTB fails.D. RTA will take the place of DR only if both RTB and RTC fail.
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A position that is obtained by using two or more intersecting lines of position taken at nearly the same time，is a(n) ______.A.fixB.running fixC.estimated positionD.dead-reckoning position
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Which statement concerning current is TRUE ________．A.Current can be determined by measuring the direction and distance between simultaneous EP and DR positionsB.The drift of the current should be averaged out on a one hour basisC.After the current is determined，it should not be used for further plotting because it is an unknown variableD.The distance between a simultaneous DR position and fix is equal to the drift of the current
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Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west ________．A.Heeling magnetB.Flinders barC.Fore-and-aft magnetsD.All of the above can be set on magnetic east or magnetic west headings
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The most accurate method of determining gyrocompass error while underway is by ______．A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the bodyB.Comparing the gyro heading with the magnetic compass headingC.Determining from the chart the course made good between celestial fixesD.It cannot be determined accurately at sea due to drift of unknown currents
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Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south ________．A.Quadrantal spheresB.Heeling magnetsC.Flinders barD.Fore-and-aft magnets
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A wind vane on a moving vessel shows ______.A.dead reckoning wind directionB.true wind directionC.apparent wind directionD.estimated wind direction
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考题
单选题You should plot your dead reckoning position（）.A
when you obtain an estimated positionB
only in piloting watersC
at every speed changeD
All of the above are correct
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单选题You should plot your dead reckoning position at（）.A
every fix or running fixB
every course changeC
every speed changeD
All of the above are correct
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单选题You should plot your dead reckoning position（）.A
From every fix or running fixB
From every estimated positionC
Every three minutes in pilotage watersD
Only in pilotage waters
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单选题The drift and set of tidal，river，and ocean currents refer to the（）.A
position and area of the currentB
speed and direction toward which the current flowsC
type and characteristic of the current's flowD
None of the above
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单选题A tug is approaching a broken down steamer in moderately heavy weather preparing to take it in tow. In most cases the（）.A
steamer will drift stern downwindB
tug will drift faster than the steamerC
tug should approach stern toD
tug should approach from downwind
考题
单选题A dead reckoning (DR) plot（）.A
must utilize magnatic coursesB
must take set and drift into accountC
should be replotted hourlyD
should be started each time the vessels position is fixed
考题
单选题A dead reckoning (DR) plot（）.A
must utilize magnetic coursesB
must take set and drift into accountC
should be replotted hourlyD
should be started each time the vessel's position is fixed
考题
单选题A dead reckoning (DR) plot（）.A
ignores the effect of surface currentsB
is most useful when in sight of landC
must be plotted using magnetic coursesD
may be started at an assumed position
考题
单选题Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.A
Heeling magnetB
Flinders barC
Fore-and-aft magnetsD
All of the above can be set on magnetic east or magnetic west headings
考题
单选题Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.A
Quadrantal spheresB
Heeling magnetsC
Flinders barD
Fore-and-aft magnets
考题
单选题The most accurate method of determining gyrocompass error while underway is by（）.A
Comparing the gyro azimuth of a celestial body with the computed azimuth of the bodyB
Comparing the gyro heading with the magnetic compass headingC
Determining from the chart the course made good between celestial fixesD
It cannot be determined accurately at sea due to drift of unknown currents
考题
单选题A single line of position combined with a dead-reckoning position results in a(n)（）.A
running fixB
fixC
estimated positionD
assumed position
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单选题At 2200 you take the following loran readings: 9960-W-15064.5; 9960-Y-43954.8. Which statement is TRUE? （）A
The current is floodingB
You are being set to the left of the trackC
The set is towards the southwestD
The drift is 0.6 knot.
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单选题The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.A
doldrumsB
horse latitudesC
trade windsD
prevailing westerlies
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单选题Which statement concerning current is TRUE（）.A
Current can be determined by measuring the direction and distance between simultaneous EP and DR positionsB
The drift of the current should be averaged out on a one hour basisC
After the current is determined，it should not be used for further plotting because it is an unknown variableD
The distance between a simultaneous DR position and fix is equal to the drift of the current
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