你可能感興趣的試題

單項(xiàng)選擇題

A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.

A.the horizontal component of the permanent magnetism
B.deviation caused by the vessel's inclination from the vertical
C.induced magnetism in the horizontal soft iron
D.induced magnetism in the vertical soft iron

單項(xiàng)選擇題

A compass card without north-seeking capability that is used for relative bearings is a(n)（）.

A.bearing circle
B.pelorus
C.bearing bar
D.alidade

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