Isogonic lines are lines on a chart indicating ().
A、points of equal variation
B、points of zero variation
C、the magnetic latitude
D、magnetic dip
A、points of equal variation
B、points of zero variation
C、the magnetic latitude
D、magnetic dip
A、A.Magnetic materials of the same polarity repel each other and those of opposite polarity attract B、B.The Earth's magnetic lines of force are parallel to the surface of the Earth C、C.Magnetic meridians connect points of equal magnetic variation D、D.The compass needle(s) will,when properly compensated,lie parallel to the isogonic lines of the Earth
A、A.Magnetic materials of the same polarity repel each other and those of opposite polarity attract B、B.The Earth's magnetic lines of force are parallel to the surface of the Earth C、C.Magnetic meridians connect points of equal magnetic variation D、D.The compass needle(s)will,when properly compensated,lie parallel to the isogonic lines of the Earth
A、On a vessel ,lines are made fast on bollards . B、On shore, lines are made fast on bollards . C、On board , lines are made fast on bitts. D、On board, lines are made fast on bollards .
A、A.Point p = new Point(); B、B.Line.Point p = new Line.Point(); C、C.The Point class cannot be instatiated at line 15. D、D.Line l = new Line() ; l.Point p = new l.Point();
A、Magnetic compass table B、Magnetic meridians C、Isogonic lines D、Variation is not indicated on small-scale nautical charts
A、Magnetic compass table B、Magnetic meridians C、Isogonic lines D、Variation is not indicated on small-scale nautical charts
A、found in the center(s) of the compass rose(s) B、indicated by isogonic lines C、found in a note on the chart D、All of the above