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單項(xiàng)選擇題

The lubber’s line on a magnetic compass indicates（）.

A.compass north
B.the direction of the vessel's head
C.magnetic north
D.a relative bearing taken with an azimuth circle

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單項(xiàng)選擇題

The lubber’s line of a magnetic compass（）.

A.always shows true north direction
B.indicates the vessel's heading
C.is always parallel to the vessel's transom
D.is located on the compass card

單項(xiàng)選擇題

The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.

A.deviation
B.variation
C.compass error
D.dip

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