單項(xiàng)選擇題Deneb is found in what constellation?()

A.Cygnus
B.Pegasus
C.Ursa Major
D.Andromeda


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1.單項(xiàng)選擇題Define the acronym MSI().

A.Maritime Safety Information
B.Maritime Shipping Index
C.Maritime Satellite Indicator
D.Mariner Safety Intelligence

2.單項(xiàng)選擇題Deficient oxygen content inside a chain locker can be detected with().

A.litmus paper
B.combustible gas indicator
C.oxygen breathing apparatus
D.oxygen indicator

3.單項(xiàng)選擇題Deck beams on a ship are generally spaced at equal intervals and run().

A.longitudinally
B.vertically
C.transversely
D.intermittently

4.單項(xiàng)選擇題Day-shapes must be displayed().

A.between sunset and sunrise
B.only between 8 AM and 4 PM
C.during daylight hours in any visibility
D.during daylight hours in unrestricted visibility only

5.單項(xiàng)選擇題Daylight savings time is a form of zone time that adopts the time().

A.one zone to the east
B.one zone to the west
C.two zones to the east
D.two zones to the west