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單項選擇題

A mooring line leading at nearly right angles to the keel is a（）.

A.bow line
B.breast line
C.spring line
D.stern line

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單項選擇題

A mooring line leading 45°to the keel，used to check forward or astern movement of a vessel，is called a（）.

A.spring line
B.warp line
C.bow line
D.breast line

單項選擇題

A look-out should report objects sighted using（）.

A.true bearings
B.magnetic bearings
C.gyro bearings
D.relative bearings