海船船员考试
单选题A METHOD OF TOWING VESSELS THROUGH POLAR ICE BY MEANS OF ICEBREAKING TUGS WITH A SPECIAL STERN NOTCH SUITED TO RECEIVE AND HOLD THE BOW OF THE VESSEL TO BE TOWED defines（）.A Towing operationsB Rigid coupled towingC Close coupled towingD Hard coupled to
题目
Towing operations
Rigid coupled towing
Close coupled towing
Hard coupled towing
相似问题和答案
第1题：
_____ ice cream in the world is more delicious than American ice cream.
A: None
B: Neither
C: Not
D: No
第2题：
You are on an ice-reinforced vessel about to enter packice．You should ______．
A.enter the pack on the windward side where there is a well defined ice edge
B.trim to an even keel or slightly down by the bow to take maximum benefit of the ice reinforcement
C.take maximum advantage of coastal leads caused by offshore winds
D.look for areas of rotten ice and enter perpendicular to the ice edge
第3题：
In cold, damp weather, the buildup of ice on airplane wings can pose significant aerodynamic problems. Which of the following effects would you expect?
A.As ice builds up on the top of the wing, drag increases.
B.As ice builds up on the top of the wing, lift increases.
C.As ice builds up on bottom of the wing, lift decreases.
D.All of the above
To answer this question, you need to understand the concepts of lift and drag. You also need to recognize that Table 1 provides the data relevant to the question. Ice building up on top of the wing would increase lift, since the higher the curved upper surface of the wing, the greater the difference between the speed of air moving under the wing and above it. It would also increase drag, as suggested by the third column of Table 1: notice how the wings with the higher upper surface also have greater drag. Finally, ice building up under the wing would decrease the speed of air moving under the wing and so reduce lift. Thus, all three effects would occur.
第4题：
第一篇
Arctic Melt
Earth’s North and South Poles are famous for being cold and icy.Last year,however,the amnount of ice
in the Arctic Ocean（北冰洋）fell to a record low.
Normally,ice builds in Arctic waters around the North Pole each winter and shrinks（缩小）during the
summer. But for many years,the amount of ice left by the end of summer has been declining.
Since 1979,each decade has seen an 11.4 percent drop in end?of-summer ice cover. Between 1981 and
2000,ice in the Arctic lost 22 percent of its thickness,becoming I.13 meters thinner.
Last summer,Arctic sea ice reached its thinnest levels yet.By the end of summer 2007,the ice had
shrunk to cover just 4.2 million square kilometers.That's 38 percent less area than the average cover at that
time of year. And it's a very large 23 percent below the previous record low,which was set just 2 years ago.
This continuing trend has made scientists concerned.
There may be several reasons for the ice melt, says Jinlun Zhang, an oceanographer（海洋学家）at the
University of Washington at Seattle.Unusually strong winds blew through the Arctic last summer. The winds
pushed much of the ice out of the central Arctic,leaving a large area of thin ice and open water.
Scientists also suspect that fewer clouds cover the Arctic now than in the past.Clearer skies allow more
sunlight to reach the ocean.The extra heat warms both the water and the atmosphere.In parts of the Arctic
Ocean last year,surface temperatures were 3.5℃warmer than average and 1.5℃warmer than the previous
record high.
With both air and water getting warmer,the ice is melting from both above and below. In some parts of
the Beaufort Sea,north of Alaska and western Canada,ice that measured 3.3 meters thick at the beginning
of the summer measured just 50 centimeters by season's end.
The new measurements suggest that melting is far more severe than scientists have seen by just looking
at ice covcrfrom above,says Donald K. Perovich,a geophysicist at the U.S.Army Cold Regions Research
and Engineering Laboratory in Hanover,N.H.
Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover.
A:how acetirate the new measurements are
B:how thick the ice is in it
C:how serious the problem of the ice melt in the Arctic is
D:how dangerous it is to travel to it
根据第四段第二句可知答案。
第五段的最后一句话和第六段的第一、二句话说明了科学家们推测的冰川融化的原因：一为强风，二为较少的云。
短文第七段举例说明在一个夏天冰层可以以令人难以置信的速度巡逗融化。
短文最后一句提到，一些科学家担心北极已经陷人可能永远无法恢复的变暖趋势之中。第二篇 本文主要讲述了两个失聪的青少年之间的故事。
第5题：
A METHOD OF TOWING VESSELS THROUGH POLAR ICE BY MEANS OF ICEBREAKING TUGS WITH A SPECIAL STERN NOTCH SUITED TO RECEIVE AND HOLD THE BOW OF THE VESSEL TO BE TOWED defines ______.
A.Towing operations
B.Rigid coupled towing
C.Close coupled towing
D.Hard coupled towing
通过极地冰区用破冰拖轮拖带，破冰拖轮尾部有特殊的槽口来容纳和固定被拖船的船首，这被定义为牢固组合拖带。
第6题：
When operating in an area where sea ice and icebergs are present，which statement is TRUE ________．
A.Icebergs may travel in a direction many degrees different from the sea ice
B.Both icebergs and sea ice will move in approximately the same direction and at the same speed
C.Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg
D.Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk
第7题：
In ice of higher concentrations ______ is not one of the basic applying rules．
A.keep moving
B.try to work with the ice movement，and not against it
C.excessive speed means ice damage
D.use full astern as often as possible
第8题：
A、warm
B、heat
C、heaten
D、enheat
第9题：
第一篇
Arctic Melt
Earth’s North and South Poles are famous for being cold and icy.Last year,however,the amnount of ice
in the Arctic Ocean（北冰洋）fell to a record low.
Normally,ice builds in Arctic waters around the North Pole each winter and shrinks（缩小）during the
summer. But for many years,the amount of ice left by the end of summer has been declining.
Since 1979,each decade has seen an 11.4 percent drop in end?of-summer ice cover. Between 1981 and
2000,ice in the Arctic lost 22 percent of its thickness,becoming I.13 meters thinner.
Last summer,Arctic sea ice reached its thinnest levels yet.By the end of summer 2007,the ice had
shrunk to cover just 4.2 million square kilometers.That's 38 percent less area than the average cover at that
time of year. And it's a very large 23 percent below the previous record low,which was set just 2 years ago.
This continuing trend has made scientists concerned.
There may be several reasons for the ice melt, says Jinlun Zhang, an oceanographer（海洋学家）at the
University of Washington at Seattle.Unusually strong winds blew through the Arctic last summer. The winds
pushed much of the ice out of the central Arctic,leaving a large area of thin ice and open water.
Scientists also suspect that fewer clouds cover the Arctic now than in the past.Clearer skies allow more
sunlight to reach the ocean.The extra heat warms both the water and the atmosphere.In parts of the Arctic
Ocean last year,surface temperatures were 3.5℃warmer than average and 1.5℃warmer than the previous
record high.
With both air and water getting warmer,the ice is melting from both above and below. In some parts of
the Beaufort Sea,north of Alaska and western Canada,ice that measured 3.3 meters thick at the beginning
of the summer measured just 50 centimeters by season's end.
The new measurements suggest that melting is far more severe than scientists have seen by just looking
at ice covcrfrom above,says Donald K. Perovich,a geophysicist at the U.S.Army Cold Regions Research
and Engineering Laboratory in Hanover,N.H.
Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover.
A:4.2 million square kilometers
B:11.4 million square kilometers
C:1.13 million square kilometers
D:38 million square kilometers
根据第四段第二句可知答案。
第五段的最后一句话和第六段的第一、二句话说明了科学家们推测的冰川融化的原因：一为强风，二为较少的云。
短文第七段举例说明在一个夏天冰层可以以令人难以置信的速度巡逗融化。
短文最后一句提到，一些科学家担心北极已经陷人可能永远无法恢复的变暖趋势之中。第二篇 本文主要讲述了两个失聪的青少年之间的故事。
第10题：
冰激淋的英文名称为（）。
- A、Ice cream
- B、Ice bread
- C、Froze cream
- D、White Bread
正确答案:A