單項選擇題The moisture equilibrium chart can be used to determine the().

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


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2.單項選擇題The doldrums are characterized by().

A.Steady,light to moderate winds
B.Frequent calms
C.Clear skies
D.Low humidity

3.單項選擇題The direction of prevailing winds in the Northern hemisphere is caused by the().

A.Magnetic field at the North Pole
B.Gulf Stream
C.Earth's rotation
D.Arctic cold fronts

4.單項選擇題Steady precipitation is typical of().

A.Coming cold weather conditions
B.A warm front weather condition
C.High pressure conditions
D.Scattered cumulus cloudsduring the day

5.單項選擇題Monsoons are characterized by().

A.light,variable winds with little or no humidity
B.strong,gusty winds that blow from the same general direction all year
C.steady winds that reverse direction semiannually
D.strong,cyclonic winds that change direction to conform to the passage of an extreme low pressure system