期航海学二三副Fortyfour voyages two and threeWord文档下载推荐.docx
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期航海学二三副Fortyfour voyages two and threeWord文档下载推荐.docx
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A,thesphereoftheearth
B,theearthellipsoid
C,earthellipsoid
D,sphericalrectangularcoordinatesystem
3.Thedirectionofthewarpandweftdirectionisdeterminedaccordingto_____.
A,thedirectionofthedeparturepointrelativetothepointofarrival
B,thepointofarrivalrelativetothedeparturepoint
C.Thegeographicalcoordinatesofthestartingpoint
D,thegeographicalcoordinatesofthearrivalpoint
4,40°
Nphiatsomepointontheearth,lambda=120°
E,itissymmetricaltothecenteroftheearthpointis:
A,40°
S,philambda=120°
W
B,40°
Sphi,lambda=120°
E
40°
N,C,philambda=060°
S,D,philambda=060°
D
5.Whichofthefollowingisadefiniteprobleminestablishingthegeodeticcoordinatesystem?
Ⅰ,determinetheellipsoidparameters;
Ⅱ,locatethecenteroftheellipsoid;
Ⅲ,determinethedirectionoftheaxis
A,Ⅰ,Ⅱ
B,Ⅰ,Ⅲ
C,Ⅱ,Ⅲ
D,Ⅰ,Ⅱ,Ⅲ
Thelawofthecirculardirectionofthehalfcircleis:
A,inSEsemicircle,circleisequalto180°
withsemicirclereadings
B,intheNEsemicircle,circleisequalto360°
minusthesemicirclereadings
C,inSWsemicircle,circumferenceis180°
semicirclereadings
D,inNWsemicircle,circumferenceis270°
C
7.ThesideAngleis:
A,theAnglebetweenthefirstandlastlinetothetargetline
B,objectdirection
C,trueheadingminustruedirection
D,theAngleofthetruenorthtothebearingline
A
8,ashipsudraheading140°
sudra2°
E,themeasuredsomethingtuocompassbearing350°
thenthetargetAngleis:
A,210°
B,152°
totheleft
Cand148°
D,212°
9,ashipheading045°
thegeomagnetic2°
W,1°
Ecompass,theshipleftbeamtargettruebearingasfollows:
A,314°
B,316°
Cand135°
D,134°
10,onewheelby44°
Nsailsouthwardalongthemeridian,poorlogreadingsof240'
deltaL=0%,regardlessofoutsideinfluencesandnavigationerror,etc.,hasarrivedinthelatitudeof_____.
A,equalto40°
N
Bandmorethan40°
C,lessthan40°
D.Can'
tbesure
11.TheheightofthesettingobjectisH(unit:
m),andtheheightoftheobserverise(unit:
m).Intheory,theobservercanseethehorizontaldistanceD,(unit:
nmile)for_____.
A,2.09
B,2.09
C,2.09+2.09
D,2.20
12.WhichofthefollowingfactorsdoesthebeacontowerrangeoftheChinesechartsandcharts?
A,highlight
B.Lightintensity
C,groundcurvature
D.theactualeyeheightoftheobserver
Thespeedofwateristhespeedoftheshipin_____.Ⅰ,noromantic;
Ⅱ,havenoflowwind;
Ⅲ,flowwithoutwind;
Ⅳ,romantic
A,onlyⅠ
B,Ⅰ~Ⅳ
C,Ⅰ,Ⅱ,Ⅳ
D,Ⅰ,Ⅱ
14,asailingship,therelativelogtypechangerateoftheship,deltaL=0%,theseaareahastheflow,thevelocityis2kn,thedistanceofthelogafter1his:
A,0'
0.
B,a+2'
C,2'
-.0
D.Itdependsonthewindandflowdirectionoftheseaarea
15.Onthemertograph,agraphiconthegraphissimilartothatontheground.
A,graphicswithAcertainarea
B,infinitesimalgraphics
C,anysizeofthegraph
D,graphicswithintheentiremap
Thelimitaccuracyofthescaleofthedrawingerrorinchartpaintingisnomorethan0.1mm,andthescaleis1:
10000.
A,5m
B,10m
C,15m
D,2m
EqualAngletransversecylindricalprojection,orgauss-klugprojection,isoftenusedtodrawinsailing:
A,hemispherestarmap
B,largecirclechart
C,Mercatorseacharts
D,largescaleharborplan
Theshipsaresailingalongthecoastandalongthecoast,usuallyusingtheconstantrouteline,whichisbecause:
AandtheMercatorchartisAstraightline,theshortestroutebetweentwopoints
B,sailingontheconstantdirectionline,theshipiseasytooperateandhaslittleimpactonthevoyage
C,constantdirectionlineisequalAngleroute,andcanmaintaintheequiangularcharacteristicsofthechart
Dandtheconstant-directionlinecanbekeptinlinewiththeincreasingofthelatitude
19.TheincreasingrateoflatitudeofeachparallelintheMercatorchartis:
A,fixed
B.Changewithlongitude
C,changewithlocalscale
D,changewiththescaleofchartscale
Thefollowingstatementaboutgaussprojectionisincorrect:
A,usetheearth
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