單項選擇題In navigation the abbreviation “DF” refers to().

A.Deep Flood
B.Direction Finder
C.Double Freeboard
D.Dangerous Fertilizer


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1.單項選擇題There are many navigational aids().

A.in chief engineer's room
B.in chief officer's room
C.on the bridge
D.on deck

2.單項選擇題All entries in Logbook,()made, must not be erased.

A.once
B.whether
C.previous
D.just

3.單項選擇題The pilot said he()our vessel directly to berth.

A.will take
B.took
C.is taking
D.would take

4.單項選擇題Mooring lines both()were let go.

A.for and aft
B.from and aft
C.fore and aft
D.all and aft

5.單項選擇題Your()is 175°from the lighthouse.

A.bearing
B.position
C.location
D.place