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單項(xiàng)選擇題

On a nautical chart，the inner ring of a compass rose indicates（）.

A.true directions
B.compass error
C.deviation
D.magnetic directions

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單項(xiàng)選擇題

Navigational warnings are published according to（）.

A.the designed area
B.the designated area
C.the indicated area
D.all area over the world

單項(xiàng)選擇題

Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.

A.Notices to Mariners
B.Sailing Directions
C.List of Lights and Signals
D.Guide to Port Entries

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