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单选题
As a ship moves through the water，it causes a wake，which is also moving forward relative to the sea. In addition to a fore and aft motion，this wake also has a(n)（）.
A
downward and inward flow
B
downward and outward flow
C
upward and inward flow
D
upward and outward flow
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单选题（）is applied to the area of the ship’s hull which is out of water when the ship is loaded.A
Boottopping paintB
Topside paintC
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wake distributionD
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Deallocates space above the high-water mark that is currently not in useD
None of the above
考题
单选题Wake varies considerably with the form of the vessel, but, generally speaking, the bluffer the ship （） the wake value.A
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考题
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考题
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考题
单选题When is the density of the water required to be logged in the logbook of a ship?（）A
Any time the vessel moves from water of one density into waters of a different densityB
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单选题Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.A
expandB
extractC
increaseD
decrease
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