A.Variable
B.Changing
C.Backing
D.Veering
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A.a high pressure area
B.an extratropical cyclone
C.a tropical storm
D.an easterly wave
A.Changes direction clockwise，as from north to east，etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise，as from south to east，etc
A.Hill of low pressure
B.Trough of low pressure
C.Valley of low pressure
D.Ridge of low pressure
A.Pressure gradient
B.Coriolis effect
C.Aurora borealis
D.Ballistic deflection
A.Stratocumulus clouds or strange birds
B.Rain and increasing winds
C.An exceptionally long swell
D.Dark clouds and the“bar”of the storm
A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium exists
B.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodity
C.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargo
D.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
A.Snow
B.Freezing Rain
C.Hail
D.Sleet
A.bring the sails parallel to the wind
B.reduce sail area exposed to the wind
C.allow the sails to catch more wind
D.remove all tension on the main and jib sheets
A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned
A.Starboard quarter，hold course and make as much speed as possible
B.Port bow，hold course and make as much speed as possible until the hurricane has passed
C.Port quarter，maintain course and make as much speed as possible
D.Starboard bow and heave to until the hurricane has passed
最新試題
The strong wind will make us（）here for some days.
In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.
When your vessel is on or near the path of an approaching tropical storm the（）.
What kind of conditions would you observe as the eye of a storm passes over your ship’s position（）.
Two well-developed high pressure areas may be separated by a（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.
When experiencing heavy winds，you should reef sails to（）.
The moisture equilibrium chart can be used to determine the（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.