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The reciprocating pump can’t draw water from a tank may be caused by （）.
A . leaky pipe
B . opened inlet valve
C . too much water in tank
D . None of the above
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（） system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.
A . The domestic water
B . Bilge water
C . Oil transfer
D . The ballast
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How is a safe water mark，that can be passed close aboard on either side，painted and lighted?（）
A . Black and white stripes with an interrupted quick flashing light
B . Black and red stripes with a Morse (A) light
C . Black and red stripes with an interrupted quick flashing light
D . Red and white stripes with a Morse (A) light
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Information,in its most restricted technical sense,is a seque of symbols that can be interpreted as a message.ingormation can be recorded as signs,or transmitted as（）
A . A、symbols
B . B、message
C . C、signals
D . D、wave
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The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.
A . seawater contamination
B . frequent surface blows
C . dissolved oxygen deaeration
D . frequent bottom blow
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A r（） is often seen as part of a word， but it can never stand by itself although it bears clear， definite meaning.
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A user in the op_storage group logs onto the DS GUI and goes to the User Administration panel. Which users can be seen and what actions can be performed（）
A . the user can see all other users， including those in the Admin group， but can modify only the user accounts in theOp_volume and Monitor group
B . the user can see all the users except those in the Admin group， but can only modify the user’s own account
C . the user can see only the user’s own account， and cannot modify it
D . the user can see only the user’s own account， and can change the password only
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A water pump can not supply water after startingIt may be caused by （）.
A . closed discharge valve
B . broken pipe line
C . worn shaft
D . both A and B
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The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen（）.
A . under existing visibility conditions
B . under perfect visibility
C . with ten miles visibility
D . with fifteen miles visibility
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The rate of heat transfer in a water-tube auxiliary boiler can be increased by （）.
A . operating the boiler at less than normal water level
B . installing fins on the firesides of water-tubes
C . increasing the amount of excess air to the burners
D . treating the boiler water with chemical oxygen scavenger
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Ways to reduce energy and water consumption can be understood as an informational process.
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Language can be seen as a whole with three dimensions. Which of the following is not one of the three dimensions?
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Providing a visual or physical demonstration and providing different contexts can be seen as the ways to ______ .
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Relating to the story of K by Coetzee, Robinson Crusoe can be seen as a typical image of a colonizer in British expansion.
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The identification is unnecessary to present when you check into the hotel as it can be seen in the hotel reservation system.
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Finding synonyms and antonyms, using word net-work and using the Internet resources for more ideas can be seen as the ways to ______ .
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Plagiarism is seen as a kind of theft, and is considered to be an academic crime.
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Culture can be seen from different carriers: culture as place, culture as people, culture as art, culture as literature and culture as product.
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People in Bangladesh can use____as a safe source of drinking water.
A．ground water
B．rainwater
C．drinking water
D．fresh water
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_______ a microscope we can see different kinds of things that are unable to be seen by our naked eyes.
A.In terms of
B.In place of
C.By means of
D.By far
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Specialisation can be seen as a response to the problem of an increasing accumulation of scientific knowledge. By splitting up the subject matter into smaller units, one man could continue to handle the information and use it as the basis for further research. But specialisation was only one of a series of related developments in science affecting the process of communication. Another was the growing professionalisation of scientific activity.
No clear-cut distinction can be drawn between professionals and amateurs in science: exceptions can be found to any rule. Nevertheless, the word "amateur" does carry a connotation that the person concerned is not fully integrated into the scientific community and, in particular, may not fully share its values. The growth of specialisation in the nineteenth century, with its consequent requirement of a longer, more complex training, implied greater problems for amateur participation in science. The trend was naturally most obvious in those areas of science based especially on a mathematical or laboratory training, and can be illustrated in terms of the development of geology in the United Kingdom.
A comparison of British geological publications over the last century and a half reveals not simply an increasing emphasis on the primacy of research, but also a changing definition of what constitutes an acceptable research paper. Thus, in the nineteenth century, local geological studies represented worthwhile research in their own right; but, in the twentieth century, local studies have increasingly become acceptable to professionals only if they incorporate and reflect on the wider geo logical picture. Amateurs, on the other hand, have continued to pursue local studies in the old way. The overall result has been to make entrance to professional geological journals harder for amateurs, a result that has been reinforced by the wide spread introduction of refereeing, first by national journals in the nineteenth century and then by several local geological journals in the twentieth century. As a logical consequence of this development, separate journals have now appeared aimed mainly towards either professional or amateur readership. A rather similar process of differentiation has led to professional geologists coming together nationally within one or two specific societies, whereas the amateurs have tended either to remain in local societies or to come together nationally in a different way.
Although the process of professionalisation and specialisation was already well under way in British geology during the nineteenth century, its full consequences were thus delayed until the twentieth century. In science generally, however, the nineteenth century must be reckoned as the crucial period for this change in the structure of science.
The growth speeialisation in the 19th century might be more clearly seen in sciences such as ______.
A．sociology and chemistry
B．physics and psychology
C．sociology and psychology
D．physics and chemistry
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In some ways, the human body is both like a furnace and like an engine. It must have fuel to produce heat as a furnace【C1】______. It must have fuel to produce motion and do【C2】______as an engine does. The nutrients(营养物)which【C3】______energy best are carbohydrates(碳水化合物)and fats. Protein can also be used as fuel. Minerals, vitamins, and water,【C4】______extremely valuable to the body, cannot be used as fuel.
If the body takes in more carbohydrates【C5】______are used for energy, the【C6】______is stored. Two storage places are the liver(肝)and muscles. There is a【C7】______, however, to the amount of carbohydrates they can【C8】______. When they are filled and they always【C9】______be for you to feel your best, excess carbohydrates are changed to fat and【C10】______around the body.
If the body does not take【C11】______a sufficient amount of food, it will use its stored fat for energy. If you【C12】______at all, the body would use up all the stored fats and【C13】______it would use its own protein in order to keep【C14】______as long as possible.
Therefore, the【C15】______amount of food you eat should be in【C16】______with your energy requirements. It is not necessary,【C17】______, for you to go【C18】______counting calories(卡路里)and weighing food. If a person is the【C19】______weight, it is safe to【C20】______that he is eating enough.
【C1】
A．has
B．needs
C．does
D．is
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who suggests that the idea of survival can be seen as the central symbol of canadia literature？
A. Michael Ondaatje.
B. Margaret Atwood.
C. Margaret Laurence.
D. Ted Allan.
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A view of the lake can be seen here （view的意思是)（)
A．一瞥
B．一眼
C．看到(的事物)
D．想法
