问题
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The pollution prevention regulations state that slop oil and sludge that result as part of
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As the refrigerant passes through the valve orifice, its pressure is reduced and part of t
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Which of the following italicized parts is a subject clause?A.He will have it that our pla
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______, all machines are combinations of simpler parts such as the lever, the pulley, and
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In some parts of the world, such as in England, tea ______ with milk and sugar.A is se
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About 2000 years ago, the chinese paper was made () the hair-like parts of certain pla
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