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According to the Rules, when should lights be displayed?______.
A.During the hours of darkness
B.At all times when underway
C.From sunset to sunrise and restricted visibility
D.Sunrise to sunset
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单选题According to the Rules,when should lights be displayed?().A
During the hours of darknessB
At all times when underwayC
From sunset to sunrise and restricted visibilityD
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The vessel must be altered to permit full compliance with the rulesD
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单选题A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights().A
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All of the above
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单选题Day-shapes must be displayed().A
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单选题You are entering port and have been instructed to anchor,as your berth is not yet available.You are on a SW’ly heading,preparing to drop anchor,when you observe the range lights as shown on your starboard beam.You should().A
not drop the anchor until the lights are in lineB
ensure your ship will NOT block the channel or obstruct the range while at anchorC
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drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor
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单选题Navigation lights must be displayed in all weathers from sunset to sunrise. They also().A
must be displayed when day signals are being usedB
must be displayed when moored to a pierC
may be extinguished at night on open waters when no other vessels are in the areaD
may be displayed during daylight
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