In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ().
相似题目
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Air bubbles in a hydraulic governor can cause ()
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If a small electric motor is immersed in salt water it should be () (1) washed in fresh water (2) dried in an oven
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The latent heat of water vapor in air is dependent upon the ()
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Compared to a low pressure system,generally the air in a high is().
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After "F.W.E" is given, the air system is shut down, the () gear put in, all drains and indicator cocks opened, and the cooling water kept running.
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For the proper control of the air temperature in an air conditioning system using chilled water circulation, which of the listed conditions should remain constant regardless of load changes?()
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The fresh air coming in through the inner air ports, is compressed by() to a higher pressure.
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Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at().
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The most serious effect of air trapped in a diesel engine jacket water cooling system is that it().
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A yellow signal floating in the air from a small parachute,about 300 feet above the water,would indicate that a submarine().
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A restricted air intake to a diesel engine may result in the engine ().
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()reters to be amount of water vapour in the air.
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Defective air cooler in a diesel engine will lead to ().
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Cast irons weakness in tension and under shock loading limits its use to low pressure steam, air, oil and low speed water fittingsThe above sentence, most probably means ().
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Too much excess air is ()because the heat generated is being lost through the exhaust trunking instead of being made used of in heating the water to produce steam.
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____ no air or water, there would be no life in the world.
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原文:物体在水中比在空气中轻,这是一个大家共有经验。译文:It is a of common experience that are in water than they are in air.
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Choose a correct sound for the underlined letters in the following sentence.The winter wind will bring a big chill.
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In what way is culture like the water a fish swims in?
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原文:物体在水中比在空气中轻,这是一个大家共有经验。译文:It is a of common experience that are in water than they are in air.第一空:matter;第二空: bodies;第三空: lighter
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When the air in a certain space is squeezed to occupy a smaller space, the air is said to be ______.
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In international air cargo transportation, a freightforwarder offering a consolidation service will issue its own air waybill.Thisis called().
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They made a fire in the open air and cooked a meal over it. ______ was made in the open air and a meal ______ over it.
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I have certainly seen lots of changes in my lifetime! I look around my home and see "mod cons" that I could never have dreamed of 50 or 60 years ago. I spent the early part of childhood in a cottage without running water or electricity and yet these days, I feel paralyzed if there is a power cut for even just an hour or two! So, I have changed too. Things that I couldn't even imagine in the past now seem quite normal.
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