A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
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The horse latitudes are characterized by（）.
In most cases，the direction of the apparent wind lies between the bow and（）.
The presence of stratus clouds and a dying wind will usually result in（）.
Radiation fog（）.
The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.
The direction of the surface wind is（）.
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The apparent wind can be zero when the true wind is from（）.
In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.