Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
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相似题目
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In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?()
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All bilge suctions must be fitted with suitable (), which in the machinery space would be mud boxes positioned at floor plate level for easy access.
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It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong directionThis would cause the pump ().
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The three basic parts of any eductor are the nozzle, the suction chamber, and the ().
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Lube oil pumps taking suction from the sump of most small marine engines are usually ().
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A bilge suction line,in a fishing vessel with more than 16 individuals aboard,must have a strainer with an open area not less than how many times the open area of the suction line?()
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Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by ()
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A double suction centrifugal pump impeller has been installed in the reverse direction, and will ().
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As the propeller turns,voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency,pitting of the blades,and vibration. These voids are known as().
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The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that()
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Operating conditions in the crank chamber are very () those in the cylinder.
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The four strokes are called suction, compression, expansion and exhaust, but only () stroke provides the power to drive the ship.
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All bilge suction must be fitted with suitable (), which in the machinery space would be mud boxes positioned at floor-plate level for easy access.
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The static suction lift of a pump is the difference in elevation between the ().
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The lubricating oil is pumped from the drain tank, very often with () in the suction line.
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In the suction stroke air is induced into the cylinder ()In the compression stroke the air is compressed.
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Who are the Bennet’s son-in-laws in the following?
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The desks in Chinese school classrooms are put in in good order while those in the schools in most western countries are put in a .
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We are in the market___the items illustrated in our catalogue.
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Generally speaking, in an abstract, the opening and concluding statements are written in the present tense or the present perfect tense, while the methods and results are expressed in the past tense.
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The four strokes of a four-stroke diesel engine according to their sequence are :suction,compression,expansion and exhaust.()
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Among the four strokes of a four-stroke diesel engine,suction and expansion strokes are the upward strokes.()
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They _______() in the house. They are in the garage.
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There are no two leaves which are the same in the world
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