A line of position from a celestial observation is a segment of a ______.A.circle of equal altitudeB.parallel of declinationC.parallel of altitudeD.vertical circle
A line of position from a celestial observation is a segment of a ______.
A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
相关考题：
A line of position derived by radar range from an identified point on a coast will be a(n) ______.A.straight lineB.arcC.parabolaD.line parallel to the coast
A line of position derived from a loran reading is a section of a(n) ______.A.straight lineB.arcC.parabolaD.hyperbola
A time diagram is a diagram of the celestial sphere as observed from above the ______.A.south celestial poleB.north celestial poleC.observer's meridianD.Greenwich meridian
You are running parallel to the coast and take a running fix using bearings of the same object．If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be ______．A.Closer to the coastB.Farther from the coastC.On the track line ahead of the fixD.On the track line behind the fix
You are in the process of adding a barge to your tow．A line run from your power capstan and around timber heads on your tow is made fast on the new barge so that it can be pulled into position．This line is called a ______．A.Scissors wireB.Capstan lineC.Spring lineD.Fore and aft line
A “figure eight”knot is used to ______.A.be a stopperB.shorten a lineC.join lines of equal sizeD.keep a line from passing through a sheave
An isotherm is ______.A.a line on a weather map connecting equal points of both temperature and pressureB.an instrument that measures the climatological effects of temperatureC.a line connecting points of equal barometric pressure on a weather mapD.a line connecting points of equal temperature on a weather map
单选题A “figure eight” knot is used to（）.Abe a stopperBshorten a lineCjoin lines of equal sizeDkeep a line from passing through a sheave
单选题The square knot is used for（）.Aforming temporary eyes in linesBjoining two lines of equal sizeCkeeping line from unlaying or frayingDjoining two lines of different size
单选题A line of position from a celestial observation is a segment of a （）.Acircle of equal altitudeBparallel of declinationCparallel of altitudeDvertical circle
单选题A line of position derived by radar range from an identified point on a coast will be a(n) （）.Astraight lineBarcCparabolaDline parallel to the coast
单选题（）is a term denoting the determination of a ship’s position by observations of Celestial or terrestrial objects，or by a combination of both．ACourse-planningBPosition-fixingCRadar-plottingDStowage-plan making
单选题Which signal is detected as originating from a SART?（）AThe Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call signBA line of blip code on a radar screen outward from the SART's position along its line of bearingCA line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearingDNone of these
单选题A star is observed at lower transit. The line of position derived from this sight is（）.Aon the prime verticalBa latitude lineCa longitude lineDof no special significance
单选题A line of position formed by sighting two charted objects in line is called a(n)（）.Arelative bearingBrange lineCtrack lineDestimated position
单选题A line of position derived from a loran reading is a section of a(n) （）.Astraight lineBarcCparabolaDhyperbola
单选题A line of position is（）.Aa line connecting two charted objectsBa line on some point of which the vessel may be presumed to be locatedCthe position of your vesselDnot used in a running fix
单选题The equator is（）.Athe primary great circle of the Earth perpendicular to the axisBthe line to which all celestial observations are reducedCthe line from which a celestial body's altitude is measuredDAll of the above
单选题A latitude line will be obtained by observing a body （）.Aon the prime verticalBon the celestial horizonCat lower transitDon the Greenwich meridian
单选题You are running parallel to the coast and take a running fix using bearings of the same object.If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be（）.ACloser to the coastBFarther from the coastCOn the track line ahead of the fixDOn the track line behind the fix
多选题Which four statements correctly describe functions that are available in SQL? （）AINSTR returns the numeric position of a named character.BNVL2 returns the first non-null expression in the expression list.CTRUNCATE rounds the column, expression, or value to n decimal places.DDECODE translates an expression after comparing it to each search value.ETRIM trims the heading of trailing characters (or both) from a character string.FNVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.GNULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.
单选题A single line of position combined with a dead-reckoning position results in a(n)（）.Arunning fixBfixCestimated positionDassumed position
单选题When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）Aadjusting the position of the intermediate bearingBchanging the position of the main engine installationCadjusting the center line of the propellerDchanging the position of the thrust block
单选题Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.AGreenwich celestial meridianBhour circle of the bodyClocal celestial meridianDvertical circle of the body
单选题A time diagram is a diagram of the celestial sphere as observed from above the（）.Asouth celestial poleBnorth celestial poleCobserver's meridianDGreenwich meridian