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单选题
Geographic range is the maximum distance at which a light may be seen under（）.
A
existing visibility conditions，limited only by the curvature of the Earth
B
perfect visibility conditions，limited only by the curvature of the Earth
C
existing visibility conditions，limited only by the intensity of the light
D
perfect visibility conditions，limited only by interference from background lighting
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更多 “单选题Geographic range is the maximum distance at which a light may be seen under（）.A existing visibility conditions，limited only by the curvature of the EarthB perfect visibility conditions，limited only by the curvature of the EarthC existing visibility conditions，limited only by the intensity of the lightD perfect visibility conditions，limited only by interference from background lighting” 相关考题
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How is the intensity of a light expressed in the Light Lists?______.A.Luminous rangeB.Geographic rangeC.Nominal rangeD.Meteorological range
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单选题How is the intensity of a light expressed in the Light Lists?（）.A
Luminous rangeB
Geographic rangeC
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单选题Which method listed below is acceptable by classification society to perform hose testing to weather tight hatch covers and closing appliances（）A
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考题
单选题The range of a light on Admiralty Charts is normally the（）.A
nominal rangeB
luminous rangeC
geographical rangeD
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考题
单选题Geographic range is the maximum distance at which a light may be seen under（）.A
existing visibility conditions，limited only by the curvature of the EarthB
perfect visibility conditions，limited only by the curvature of the EarthC
existing visibility conditions，limited only by the intensity of the lightD
perfect visibility conditions，limited only by interference from background lighting
考题
单选题The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen（）.A
under existing visibility conditionsB
under perfect visibilityC
with ten miles visibilityD
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考题
单选题The minimum length of a boat painter for a lifeboat in ocean service is（）.A
60 fathomsB
the distance from the main deck to the light waterlineC
twice the distance from the main deck to the light waterline or 50 feet whichever is greaterD
two times the distance from the boat deck to the light waterline or 50 feet whichever is greater
考题
单选题The distance from which a certain light is visible is directly proportional to the wattage of the light bulb. If the light is visible from 16 meters when a 40 watt bulb is used, from what distance is the light visible when a 75 watt bulb is used?A
30 metersB
35 metersC
51 metersD
89 metersE
91 meters
考题
单选题Which of the following operates in the 2.4GHz range and has a MAXIMUM distance of 10 meters (33 feet)?（）A
x-10B
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考题
单选题A head-on situation at night is one in which you see（）.A
one sidelight of a vessel ahead of youB
one sidelight and a masthead light of a vessel ahead of youC
one sidelight，a masthead light，and a range light of a vessel ahead of youD
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考题
单选题The directive force of a gyrocompass（）.A
increases with latitude，being maximum at the geographic polesB
decreases with latitude，being maximum at the geographic equatorC
is greatest when a vessel is near the Earth's magnetic equatorD
remains the same at all latitudes
考题
单选题A radar range to a small，charted object such as a light will provide a line of position in which form? （）A
Straight lineB
ArcC
ParabolaD
Hyperbola
考题
单选题In which source could you find the number of a chart for a certain geographic area?（）A
Chart No.1B
Catalog of ChartsC
IMO Practical NavigatorD
IMO Light List
考题
单选题The maximum distance at which a light may be seen under the existing visibility conditions is called（）.A
nominal rangeB
luminous rangeC
charted rangeD
geographic range
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