A.tidal wave
B.storm surge caused by a hurricane or tropical storm
C.earthquake on the ocean's floor
D.tornado
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A.is located between the scheme and the nearest land
B.separates traffic proceeding in one direction from traffic proceeding in the opposite direction
C.is designated as an anchorage area
D.contains all the traffic moving in the same direction
A.the chocks at the bow of a towed vessel
B.the most forward，centermost point of a towed vessel such as a sturdy bow rail
C.the mast of a towed sailboat
D.a secure fitting near the bow of the towed vessel
A.a Coast Guard inspector
B.a registered professional engineer
C.the owner or Master of the vessel
D.a licensed electrician
A.shown below the stern light
B.white in color
C.displayed at the masthead
D.a yellow light having the same characteristics as the stern light
A.shown at the bow
B.white in color
C.shown in addition to the stern light
D.an all-round light
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A special daymark is a（）.
A type of precipitation that occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level is known as（）.
A time diagram is a diagram of the celestial sphere as observed from above the（）.
A slow，gradual fall of the barometer indicates approaching（）.
A tug may be in danger of tripping when（）.
A tsunami is caused by a(n)（）.
A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when（）.
A time diagram is a diagram on the plane of the（）.
A tank 36 ft. by 36 ft. by 6 ft. is filled with water to a depth of 5 ft. If a bulkhead is placed in the center of the tank running fore-and-aft along the 36-foot axis，how will the value of the moment of inertia of the free surface be affected?（）
A tow can override its tug as a result of（）.