A pressure drop in the liquid line of a refrigeration system may cause()
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The pressure head of a pump is given in the unit of ().
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The weather is often()in a high-pressure area.
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The atmosphere in the vicinity of a high pressure area is called a(n)().
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In the Southern Hemisphere winds in a low pressure system rotate in a().
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In a vacuum distillation system, the case is the higher the pressure, ().
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In a compression refrigeration plant the refrigerant is under low pressure in the () and under high pressure in the ().
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A drop in compression pressure in one cylinder of a diesel engine can be caused by()
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A sudden drop in diesel engine cylinder compression pressure can be caused by()
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In the Northern Hemisphere,gusty winds shifting clockwise,a rapid drop in temperature,thunderstorms or rain squalls in summer (frequent rain/snow squalls in winter) then a rise in pressure followed by clearing skies,indicate the passage of a(n)() .
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If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should().
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A dirty fuel oil filter is can be detected by () Ⅰ.fuel oil analysis Ⅱ.observing the pressure drop across the filter
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A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by()
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A slow rise in the barometric pressure forecasts().
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The vapor pressure of a gas is the pressure necessary to keep it in a(n)().
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Charging-air pressure increases if there is incorrect combustion and drop in the () of the diesel engine.
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When normal operating pressure is applied to the hydraulic oil used in a high-pressure system, the oil ().
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If over a period of weeks the air-box pressure of a turbo-charged, diesel engine, operating at full load, appears to be dropping off, the cause can be ().
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The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge,and in a few minutes the pressure drops sharply. This could be a result of the().
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In a simple series circuit, the entire source voltage will drop across ()
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The highest pressure in a diesel engine cylinder normally occurs ().
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The idiom “drop in a bucket” means __________ .
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What does the hunter in “A Worn Path” drop?
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The temperature of the world in the past ten years has dropped a little______.
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The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as_______.