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.Sunrise to sunset
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
相关考题：
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 extingushed at night on open waters when no other vessels are in the areaD.may be displayed during daylight
when you are steering on a pair of range lights and find the upper light is in line above the lower light ,you should _____.A.continue on the present courseB.come rightC.wait until the lights are no longer in a vertical lineD.come left
You have a computer that runs Windows Vista.You need to ensure that active content can be automatically displayed when you insert a CD.What should you do?() A.AB.BC.CD.D
To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the ______.A.American Bureau of Shipping classification rulesB.International Regulations for Preventing Collisions at SeaC.Safety of Life at Sea ConventionD.Minerals Management Service rules
A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE?A.During the day，she would display three balls in a vertical lineB.If making way，she would show masthead lights at nightC.If at anchor，she need not show anchor lights while displaying identifying lightsD.Her fog signal would consist of a rapid ringing of a bell for five seconds every minute
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.drop the anchor immediately as the range lights mark an area free of obstructionsD.drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor
The number or name of a tank barge shall be ______．A.Displayed in at least 4 different positions on the bargeB.Carved on a wooden board and attached to the barge's hullC.Displayed as close to the navigation lights as possibleD.Displayed at the highest point of the barge's hull such that it can be seen from either side
Line throwing equipment should not be operated ______.A.during a rain stormB.in an explosive atmosphereC.near a lifeboat stationD.by other than licensed officers
单选题According to the Rules，when should lights be displayed?（）.ADuring the hours of darknessBAt all times when underwayCFrom sunset to sunrise and restricted visibilityDSunrise to sunset
单选题You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.AThe vessel must carry only the lights that comply with the rules; the others may be omittedBThe vessel's lights must comply as closely as possible，as determined by her governmentCThe vessel must be altered to permit full compliance with the rulesDAn all-round light should be substituted for the after masthead light and the stern light
单选题When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.Aone short blastBone prolonged blastCtwo short blasts
单选题When your vessel enters thick fog，she should sound（）every two minutes in accordance with these Rules.Aone short blastBone prolonged blastCtwo short blastsDthree short blasts
单选题The prohibition against displaying lights which may be confused with required navigation lights applies（）.Afrom sunset to sunrise and during restricted visibilityBonly when other vessels are in the areaConly when operating in a traffic separation schemeDonly when under tow
单选题A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.Aare not the same color as either side lightBhave a lesser range of visibility than the prescribed lightsCdo not impair the visibility or distinctive character of the prescribed lightsDAll of the above
单选题Day-shapes must be displayed（）.ABetween sunset and sunriseBOnly between 8 AM and 4 PMCDuring daylight hours in any visibilityDDuring daylight hours in unrestricted visibility only
单选题A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.Ado not interfere with the keeping of a proper look-outBare not the color of either sidelightChave a lesser range than the prescribed lightsDAll of the above
单选题Under International Rules（）.Aall vessels must carry an after range lightBvessels less than 50 meters in length need not carry an after range lightCvessels stopped dead in the water should turn off their range lightsDvessels over 20 meters in length must carry both range lights from sunset to sunrise
单选题When you keep a gangway watch, you should （）the mooring lines according to the rise and fall of the tide.AadjustedBadjustingCadjustsDadjust
单选题According to the fifth rule, a pressure cooker cover should be opened ______.Aas soon as the cooking is finishedBwhile it is still on the stoveCwith force when it is hotDafter it is cooled down
单选题To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the（）.AAmerican Bureau of Shipping classification rulesBInternational Regulations for Preventing Collisions at SeaCSafety of Life at Sea ConventionDMinerals Management Service rules
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（）.Anot drop the anchor until the lights are in lineBensure your ship will NOT block the channel or obstruct the range while at anchorCdrop the anchor immediately as the range lights mark an area free of obstructionsDdrop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor
单选题Navigation lights must be displayed in all weathers from sunset to sunrise. They also（）.Amust be displayed when day signals are being usedBmust be displayed when moored to a pierCmay be extinguished at night on open waters when no other vessels are in the areaDmay be displayed during daylight