A.DEFE
B.DE
C.DS
D.DES
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A.Hydrus
B.Leo
C.Centaurus
D.Aquila
A.Cygnus
B.Pegasus
C.Ursa Major
D.Andromeda
A.Maritime Safety Information
B.Maritime Shipping Index
C.Maritime Satellite Indicator
D.Mariner Safety Intelligence
A.litmus paper
B.combustible gas indicator
C.oxygen breathing apparatus
D.oxygen indicator
A.longitudinally
B.vertically
C.transversely
D.intermittently
最新試題
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
Dacron sails，when not in use，may be damaged if（）.
Conventional anchors are least likely to hold in a bottom consisting of（）.
Daylight savings time is a form of zone time that adopts the time（）.
Compliance with the terms of the load line certificate on a ship is the responsibility of the（）.
Cyclones that have warm sectors usually move（）.
Denebola is found in what constellation?（）
Deck beams on a ship are generally spaced at equal intervals and run（）.
Deficient oxygen content inside a chain locker can be detected with（）.
Deneb is found in what constellation?（）