單項(xiàng)選擇題A tug in irons is().

A.rudder bound
B.being tripped by the towline
C.unable to maneuver
D.broached


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1.單項(xiàng)選擇題A tsunami is caused by a(n)().

A.tidal wave
B.storm surge caused by a hurricane or tropical storm
C.earthquake on the ocean's floor
D.tornado

2.單項(xiàng)選擇題A traffic separation zone is that part of a traffic separation scheme which().

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

3.單項(xiàng)選擇題A towline should be fastened to().

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

4.單項(xiàng)選擇題A towing vessel’s fire detection system may be certified to comply with the Coast Guard’s towing vessel fire protection regulations by().

A.a Coast Guard inspector
B.a registered professional engineer
C.the owner or Master of the vessel
D.a licensed electrician

5.單項(xiàng)選擇題A towing light is().

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

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A storm’s track is characterized by all of the following except().

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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?()

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A tackle is “two blocked” when the blocks are().

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A towing vessel’s fire detection system may be certified to comply with the Coast Guard’s towing vessel fire protection regulations by().

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A strong,often violent,northerly wind occurring on the Pacific coast of Mexico,particularly during the colder months,is called().

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A traffic separation zone is that part of a traffic separation scheme which().

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A towing hook may be released from the().

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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().

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A swift current occurring in a narrow passage connecting two large bodies of water,which is produced by the continuously changing difference in height of tide at the two ends of the passage,is called a().

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