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In diesel engines designed with a crosshead, the motion of the piston rod can be described as _____.
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Centrifugal pumps, however, can be designed with a number of impellers _____ to attain a large amount of liquid.
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Centrifugal pumps can be designed with a number of impellers _____ to attain a high final
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It can be inferred from the passage that______.A．it is Pascale Bastide who designed the Mu
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______, many problems of space flight could not be solved now.A．If electronic computers wo
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We cannot always______the wind, so new windmills should be so designed that they can also
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He wanted detailed instructions______be able to operate computers well.A．in order forB．in
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