A.the direction of the true wind
B.true north
C.the beam on the windward side
D.the beam on the lee side
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A.transmitter
B.transducer
C.transceiver
D.amplifier
A.Effect of the moon's gravity
B.Fetch
C.Wind velocity
D.Length of time a wind has been blowing
A.ahead of the storm center
B.in the dangerous semicircle
C.in the navigable semicircle
D.directly in the approach path of the storm
A.Alaska Current
B.Subarctic Current
C.Kuroshio Current
D.Oyashio Current
A.air being warmed above the dew point
B.saturation of cold air by rain
C.a rapid cooling of the air near the surface of the Earth at night
D.warm moist air being blown over a colder surface
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In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.
The horse latitudes are characterized by（）.
The largest waves (heaviest chop) will usually develop where the wind blows（）.
The edge of a hurricane has overtaken your vessel in the Gulf of Mexico，and the northwest wind of a few hours ago has shifted to the west. This is an indication that you are located in the（）.
In the Northern Hemisphere the major ocean currents tend to flow（）.
In the Northern Hemisphere，a wind that shifts counterclockwise is a（）.
The drift and set of tidal，river，and ocean currents refer to the（）.
The currents are（）mosoonal origin．
Radiation fog（）.
The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.