A.litmus paper
B.combustible gas indicator
C.oxygen breathing apparatus
D.oxygen indicator
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A.longitudinally
B.vertically
C.transversely
D.intermittently
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
A.one zone to the east
B.one zone to the west
C.two zones to the east
D.two zones to the west
A.left in the sunlight
B.stowed wet
C.washed with soap
D.folded frequently
A.westerly
B.parallel to the isobars in the warm sector
C.toward the nearest high pressure area
D.faster than the accompanying cold front
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Compared to internal structural plating,the exterior hull plating on a ship is usually().
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Complete information on weather broadcasts throughout the world is contained in().
Cyclones that have warm sectors usually move().