After some water reducing agent is used into concrete, the function of the agent is()if some water is reduced
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Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?()
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The () should be gradually reduced after FWE.
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A water pump can not supply water after startingIt may be caused by ().
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Ways to reduce energy and water consumption can be understood as an informational process.
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Please pass the potatoes to me after you take some.
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Some will water the apple trees, ( ) will weed the cotton fields.
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Some diseases are ______ by certain water animals.
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Usually people spray (喷) some water onto the clothes to make it easier to i.
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