單項(xiàng)選擇題

The soundings on the imperial chart are measured in（）.

A.Feet
B.Yards
C.Fathoms
D.Meters

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單項(xiàng)選擇題

The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．

A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines

單項(xiàng)選擇題

The short-long dashed magenta line around Gardiners Island marks（）.

A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables