单选题Brine density in a distilling plant is measured with a/an ().ApsychrometerBsalinometerCanemometerDsphygmomanometer

单选题
Brine density in a distilling plant is measured with a/an ().
A

psychrometer

B

salinometer

C

anemometer

D

sphygmomanometer


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相关考题:

Which of the following is operated from the main engine room console on an automated vessel?A.Fire pump and lube oil pumpB.Lube oil pump and distilling plantC.Distilling plant and shaft alley doorD.Shaft alley door and fixed CO2 release

密度(density)

植物缺素症 hunger sign in plant, nutrient deficiency symptom in plant

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public class Plant {  private String name;  public Plant(String name) { this.name = name; }  public String getName() { return name; }  }  public class Tree extends Plant {  public void growFruit() { }  public void dropLeaves() { }  }  Which is true?() A、 The code will compile without changes.B、 The code will compile if public Tree() { Plant(); } is added to the Tree class.C、 The code will compile if public Plant() { Tree(); } is added to the Plant class.D、 The code will compile if public Plant() { this(”fern”); } is added to the Plant class.E、 The code will compile if public Plant() { Plant(”fern”); } is added to the Plant class.

单选题A current will develop between areas of different density in ocean waters. If you face in the same direction the current is flowing,the water of().Ahigh density will be on the left in the Northern HemisphereBhigh density will be on the right in the Southern HemisphereClow density will be on the left in the Northern HemisphereDlow density will be on the left in the Southern Hemisphere

单选题One advantage of a flash distilling plant when compared to a submerged tube distiller is()Agreater distillate purity through high temperature evaporationBcold shocking for scale removal is not requiredCless internal corrosion because of lower brine densityDless feed-water is required for equal plant capacity

单选题Excessive scale formation in a distilling plant may result from ().Apoor distillate qualityBreduced evaporator capacityClow brine concentrationDimproper vacuum regulation

名词解释题植物缺素症 hunger sign in plant, nutrient deficiency symptom in plant

单选题Which of the following is operated from the main engine room console on an automated vessel?()AFire pump and lube oil pumpBLube oil pump and distilling plantCDistilling plant and shaft alley doorDShaft alley door and fixed CO2 release

单选题The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as ().AdehydrationBcondensationCevaporationDdissolution

单选题Which of the following statements is true concerning any evaporator?()AHigh conductivity of the distillate indicates distillate salinity is excessiveBIncreasing the absolute pressure of the shell will increase the distillers capacityCMesh separators are used in evaporators to filter the distillateDReducing the brine density will reduce the heat lost overboard

单选题In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?()ACondenser circulating water pumpBFeed-water heater drain pumpCDistillate pumpDAir ejector condenser drain pump

单选题Why will a two stage flash type distilling plant tend to operate more efficiently when operating in cold seawater?()AThe colder seawater passing through the condenser tube bundles of the various stages increases evaporator vacuumBThe amount of heated feed water discharged from the feed water heater after cndenser is increasedCFewer non-condensable gases are created by the flow of colder seawaterDMore seawater is allowed to pass through the flint stage overflow weir

单选题An after-cooler installed between the turbocharger and the cylinder air inlet ()Aincreases the density of the airBdecrease the density of the airCincreases the specific heat of the airDdecreases the specific heat of the exhaust

单选题Concerning the management of sewage treatment plant using activated sludge, which of the following is correct?()Athe plant should be prohibited to supplying airBthe plant should work at intervalsCthe plant should be added disinfector in timeDwe should check strength of activated sludge, ivory-white color is best

单选题Which of the following are three areas that favor IBMs position in Web2.0 computing?()AAcquisition cost, speed and density BHigh performance processors, cooling and reliability CPower, cooling and density DAcquisition cost, density and reliability

单选题Which of the listed conditions will cause the feed water that has not flashed to vapor in the first-stage of a flash evaporator, to flow into the second-stage?()AGravity siphon effectBHigher vacuum in the second-stageCDifference in brine density between first and second stagesDlower pressure in first-stage

单选题public class Plant {  private String name;  public Plant(String name) { this.name = name; }  public String getName() { return name; }  }  public class Tree extends Plant {  public void growFruit() { }  public void dropLeaves() { }  }  Which is true?()A The code will compile without changes.B The code will compile if public Tree() { Plant(); } is added to the Tree class.C The code will compile if public Plant() { Tree(); } is added to the Plant class.D The code will compile if public Plant() { this(”fern”); } is added to the Plant class.E The code will compile if public Plant() { Plant(”fern”); } is added to the Plant class.

单选题In a flash distilling unit, evaporator feed (seawater) first absorbs heat in the ().Avapor feed heaterBair ejector condenserCsaltwater heaterDdistillate cooler

单选题When is the density of the water required to be logged in the logbook of a ship?()AAny time the vessel moves from water of one density into waters of a different densityBPrior to getting underway when the vessel is floating in fresh or brackish waterCOnly when the vessel moves from fresh water into salt waterDThe density of the water is not required to be logged in the unofficial logbook

单选题The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell ()Apressure does not fluctuate rapidlyBpressure remains steady and unchangedCbrine density does not exceed 1~5Dbrine density is too low

单选题A vacuum is initially created in a flash type distilling plant by().Athe flashing of the feed waterBthe condensation of the saltwater feedCair ejectors, eductors, or a separate vacuum pumpDcondensation of the distillate

单选题One of the causes of ocean currents is density differences in the water. This is true because ().Ain an area of high density the water's surface is lower than in an area of low densityBsurface water flows from an area of high density to one of low densityCthe lesser the density gradient the freer the water is to moveDit is the density differences that cause the currents to stay in the troughs

单选题Which of the following statements is correct relative to distillation plant operation?()ADistillation is the process of boiling seawater to produce vapor which is condensed into fresh waterBEvaporation is the second part of the distillation process where brine is removedCBrine is the result of condensed sea water vaporDDistillate is the product resulting from the evaporation of fresh water vapor