A.as a minimum
B.as a maximum
C.as a rule
D.as a result
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A.temperature
B.density
C.deflection
D.speed
A.change from smooth curves within the air mass to sharp bends at the front
B.change from sharp bends within the air mass to smooth curves at the front
C.pass smoothly across the front with no change
D.become closer together at the front and pass through in straight lines
A.Admiralty Chart
B.Admiralty Light list
C.Admiralty List of Radio Signals
D.Admiralty Notices to Mariners
A.at high vessel speeds
B.at low vessel speeds
C.in shallow water
D.in deep water
A.Vapor pressure
B.Dew point
C.Barometric pressure
D.Absolute humidity
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Bales close to the deckhead should be covered to prevent（）.
A tide is called diurnal when（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
When the wave period and the apparent rolling period are the same（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
The loading of the ship must be done in accordance with（）.
（）is on the panel of radar.
What is it called when it is possible to ignite the vapour above the oil?（）
Manoeuvring information can not be obtained from（）.