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单选题
An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? （）
A
Abandon the towing vessel
B
Radio for emergency assistance
C
Slip the towline and allow it to run off the drum
D
Secure all watertight openings on the towing vessel
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更多 “单选题An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? （）A Abandon the towing vesselB Radio for emergency assistanceC Slip the towline and allow it to run off the drumD Secure all watertight openings on the towing vessel” 相关考题
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29． Which of the following is NOT true?A． In 1884，George Eastman invented a kind of film．B． Deep-sea divers take pictures of ocean plants and animals．C， The films were developed by the owners of the cameras in the pastD． Astronauts use cameras to take f，photos in space
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Before leaving port on an ocean tow，a tug captain should assure himself of all the following EXCEPT ______.A.the towing hawser can be released quickly in an emergencyB.the correct navigation lights are rigged and operable on the tug and towC.an insurance underwriter has prepared a pre-sailing surveyD.a pick-up wire has been rigged on the tow in case of a breakaway.
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A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain ______.A.is more flexible and has the ability to absorb shock because of its weightB.is less subject to wear and damage from abrasionC.requires little maintenanceD.All of the above
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TO RUN A VESSEL UPON A BEACH TO PREVENT ITS SINKING IN DEEP WATER means ______．A.GroundB.Run agroundC.Beach（to）D.Strand
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A bridle for an ocean tow consists of ______.A.two chains of equal lengthB.a single nylon pendant rove through a heavy ring free to move on the pendantC.two long legs of wire rope shackled to a fishplateD.a single length of heavy chain with both ends secured on deck to welded pad eyes
考题
An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful Which action should now be taken?______.A.Abandon the towing vessel.B.Radio for emergency assistance.C.Slip the towline and allow it to run off the drum.D.Secure all watertight openings on the towing vessel.
考题
CAN YOU BEACH means ______.A.can you go to the beachB.can you run the vessel upon a beach to prevent its sinking in deep waterC.can you handle the vessel along the beachD.can berth along the beach
考题
Which area is the most commodities shipped in water transport?（）A、In international deep seaB、In lakesC、In river and canalsD、Coastal ocean
考题
单选题CAN YOU BEACH means（）.A
can you go to the beachB
can you run the vessel upon a beach to prevent its sinking in deep waterC
can you handle the vessel along the beachD
can berth along the beach
考题
问答题Practice 2 Until recently, scientists knew little about life in the deep sea, nor had they reason to believe that it was being threatened. Now, with the benefit of technology that allows for deeper exploration, researchers have uncovered a remarkable array of species inhabiting the ocean floor at depths of more than 660 feet, or about 200 meters. At the same time, however, technology has also enabled fishermen to reach far deeper than ever before, into areas where bottom trawls can destroy in minutes what has taken nature hundreds and in some cases thousands of years to build. Many of the world's coral species, for example, are found at depths of more than 200 meters. It is also estimated that roughly half of the world's highest seamounts - areas that rise from the ocean floor and are particularly rich in marine life - are also found in the deep ocean. These deep sea ecosystems provide shelter, spawning and breeding areas for fish and other creatures, as well as protection from strong currents and predators. Moreover, they are believed to harbor some of the most extensive reservoirs of life on earth, with estimates ranging from 500,000 to 100 million species inhabiting these largely unexplored and highly fragile ecosystems.
考题
单选题What is the purpose of the intermediate spring?（）A
Serves as a backup for the main tow hawser in case of failureB
Provides weight and flexibility to the total tow makeupC
Lengthens the main tow hawser to keep the tow in stepD
Distributes the towing load
考题
单选题A bridle for an ocean tow consists of（）.A
two chains of equal lengthB
a single nylon pendant rove through a heavy ring free to move on the pendantC
two long legs of wire rope shackled to a fishplateD
a single length of heavy chain with both ends secured on deck to welded pad eyes
考题
单选题On a long ocean tow，the bridle should be made up of two equal lengths of（）.A
chainB
wireC
nylonD
manila
考题
单选题In securing deck loads for an ocean tow，drill pipe should be（）.A
galvanized to protect against corrosionB
held in place with heavy materials such as spare pendant wireC
limited to no more than five courses highD
provided with bulwarks at both ends of their bays
考题
单选题The underwater listening system was originally designed ______.A
to trace and locate enemy vesselsB
to monitor deep-sea volcanic eruptionsC
to study the movement of ocean currentsD
to replace the global radio communications network
考题
单选题When towing astern，one way to reduce yawing of the tow is to（）.A
trim the tow by the sternB
trim the tow by the headC
have the tow on an even keelD
list the tow on the side it is yawing
考题
单选题（）Which area is the most commodity shipped in water transport?A
In international deep seaB
In lakesC
In river and canalsD
Coastal ocean
考题
单选题What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）A
ChainB
RingC
Solid thimbleD
A fishplate
考题
单选题A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.A
is more flexible and has the ability to absorb shock because of its weightB
is less subject to wear and damage from abrasionC
requires little maintenanceD
All of the above
考题
单选题A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.A
trim the tow by the bowB
trim the tow by the sternC
list the tow to windwardD
adjust the length of the towing bridle
考题
单选题The deep-sea listening system makes use of ______.A
the sophisticated technology of focusing sounds under waterB
the capability of sound to travel at high speedC
the unique property of layers of ocean water in transmitting soundD
low-frequency sounds traveling across different layers of water
考题
单选题One of the causes of ocean currents is density differences in the water. This is true because （）.A
in an area of high density the water's surface is lower than in an area of low densityB
surface water flows from an area of high density to one of low densityC
the lesser the density gradient the freer the water is to moveD
it is the density differences that cause the currents to stay in the troughs
考题
单选题Until about a century ago, the deep ocean floor, was completely inaccessible, hidden beneath waters averaging 3,600 meters deep.A
understandableB
recognizable C
unreachable D
unusable
考题
单选题To reduce stress on the towing hawser when towing astern (ocean tow)，the hawser should be （）.A
secured to the aftermost fitting on the towing vesselB
just touching the waterC
underwaterD
as short as possible
考题
单选题To run a vessel upon a beach to prevent its sinking in deep water means（）.A
groundB
run agroundC
beach (to)D
strand
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