航海英语海图及海图作业单项选择题每日一练(2018.12.20)

单项选择题
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.
A.Azimuthal gnomonic projection
B.Lambert conformal projection
C.Transverse Mercator projection
D.Polyconic projection
单项选择题
Entering from sea，a daymark on the port side of the channel would be indicated on a chart by a （）.
A.red triangle with the letter R
B.white triangle with the letters RG
C.green square with the letter G
D.white square with the letters GR
单项选择题
（）chart 3994，positions read from this chart should be shifted 0.03 minutes Northward．
A.To consider
B.To check
C.To examine
D.To agree with
单项选择题
Solid green arrows on the main body of a pilot chart indicate （）.
A.prevailing wind directions
B.prevailing ocean current directions
C.probable surface current flow
D.shortest great circle routes
单项选择题
Every chart is liable to be incomplete（）.
A.the final judge of the reliance the mariner can place on the information given
B.its immediate importance cannot always be verified before promulgation
C.through imperfections in the survey on which it is based，or subsequent alterations to the topography or sea floor
D.deferring the promulgation of certain less important information