單項(xiàng)選擇題

At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.

A.the lines of force cross the equator on a 0°-180°alignment
B.the quadrantal error is 0°
C.there is no vertical component of the Earth's magnetic field
D.the intercardinal headings have less than 1°

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單項(xiàng)選擇題

A vessel’s position should be plotted using bearings of（）.

A.buoys close at hand
B.fixed known objects on shore
C.buoys at a distance
D.All of the above

單項(xiàng)選擇題

A single line of position combined with a dead-reckoning position results in a(n)（）.

A.running fix
B.fix
C.estimated position
D.assumed position

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At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.

你可能感興趣的試題

A vessel’s position should be plotted using bearings of（）.

A single line of position combined with a dead-reckoning position results in a(n)（）.

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