in high latitudes
near the equator
on north or south headings
on intercardinal headings
第1题:
A green buoy has a yellow triangle on it. This is a(n) ______.
A.information or regulatory buoy that has lateral significance
B.buoy that is off-station and is marked to warn mariners of its wrong position
C.dual purpose marking used where the ICW and other waterways coincide
D.buoy that was set in error and will be replaced with a red nun buoy
第2题:
Which statement about the gyrocompass is FALSE ________.
A.Its accuracy remains the same at all latitudes
B.It seeks the true meridian
C.It can be used near the Earth's magnetic poles
D.If an error exists,it is the same on all headings
第3题:
Network management helps you to(66)the strengths and weaknesses of your network, as well as determine any configuration changes that may be necessary. Any controlled changes to your network and its components-especially configurations, software and(67), can have an effect on its overall efficiency. To maintain control, you need the tools and knowledge to manage all activity that has the potential to affect your(68).
A.see
B.know
C.monitor
D.control
第4题:
If the quadrantal spheres are all the way out,replace them with smaller spheres
If the quadrantal spheres are all the way in,replace them with larger spheres
If the quadrantal spheres are all of the way out,move the spheres in
If the quadrantal spheres are all the way out,replace them with larger spheres.
第5题:
Its accuracy remains the same at all latitudes
It seeks the true meridian
It can be used near the Earth's magnetic poles
If an error exists,it is the same on all headings
第6题:
A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?
A.Move the quadrantal spheres closer to the compass
B.Raise the heeling magnet if the red end is up
C.Remove some of the Flinders bar
D.Raise or lower the athwartship magnets
第7题:
It compensates for the error caused by the vertical component of the Earth's magnetic field
It compensates for error caused by the heeling of a vessel
It compensates for quadrantal deviation
It is only needed in equatorial waters
第8题:
(46)It may be said that the measure of the worth of any social institution is its effect in enlarging and improving experience; but this effect is not a part of its original motive.此处译文为:
第9题:
Salinity of water
Temperature of water
Atmospheric pressure
Type of bottom
第10题:
Move the quadrantal spheres closer to the compass
Raise the heeling magnet if the red end is up
Remove some of the Flinders bar
Raise or lower the athwartship magnets