Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease

Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.

A.expand

B.extract

C.increase

D.decrease


相关考题:

A high rate of separation between oil and water is favored by ______.A.large size of oil globule(小球)B.low temperatureC.high viscosityD.high flow rate

Oil slick caused by spillage of oil from tanker ship is ______.A.a drop of oilB.the emulsion of oil at sea surfaceC.the weathered oilD.the oil floating on the surface of the sea water

An oil tanker operating with dedicated clean ballast tanks shall be equipped with ______,approved by the Administration on the basis of specification recommended by the Organization,to enable supervision of the oil content in ballast water being discharged.A.An oil content meterB.An oil checkerC.An analyzer of oil contentD.A mixer of oily water

OIL-IN-WATER are ______.A.sediment of oil in waterB.oil dissolvents in waterC.solid oil aggregatesD.droplets of oil suspended in water

单选题A high rate of separation between oil and water is favored by ().Alarge size of oil globuleBlow temperatureChigh viscosityDhigh flow rate

单选题If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be ()Aa dirty lube oil strainerBinternal water leaksCan oil suction line restrictionDexcessive wears of the cooling water pump

单选题What type of oil is not covered in the oil pollution law?()Amineral oilBmachinery oil being transferred for shipboard useCcrude oil unrefinedDnormal bilge oil and water

单选题Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?()AAccidental discharge of oilBDisposal of oil residuesCQuantity of water produced by FWGDDischarge of dirty ballast or cleaning water from fuel oil tanks

单选题An oil tanker operating with dedicated clean ballast tanks shall be equipped with(),approved by the Administration on the basis of specification recommended by the Organization,to enable supervision of the oil content in ballast water being discharged.Aan oil content meterBan oil checkerCan analyzer of oil contentDa mixer of oily water

单选题Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?()AWater discharging from the water outlet of the lube oil purifierBFuel oil discharging from the water outlet of the lube oil purifierCLube oil discharging from the water outlet of the lube oil purifierDA change in the lube oil viscosity

单选题In an oily water separator the oil will travel () to the oil collecting spaces.AupwardsBdownwardsCoutwardsDforwards

单选题Oil water separators are used to ensure that ships dont discharge oil when pumping out ().Aballast waterBboiler waterCbilge waterDsewage water

单选题An oil water monitor is required in order to measure ().Athe oil content in waterBthe water content in fuel oilCthe water level in bilge wellDthe oil level in bilge well

单选题The remaining oil/water mixture now flows down into the fine separating compartment and moves slowly between the() in the Turbulo separator.Acatch platesBswash platesCcover platesDbedplates

单选题Demulsibility of a lube oil is defined as ().Athe ability of oil to separate from waterBthe temperature at which oil flows rapidlyCa measure of the water in a lube oil systemDan emulsion of different grades of oil

单选题Which of the following statements is true concerning an oil cooler?()AThe oil temperature is less than the cooling water temperatureBThe oil pressure is less than the cooling water pressureCThe oil pressure is greater than the cooling water pressureDThe oil flow control valve is always installed in the oil input line

单选题The position of the interface between oil and water within the centrifuge is achieved by the use of ().Agravity discBcentrifugal bowlCa stack of discsDmain sealing ring

单选题The principle of separation by which all commercially available oily water separators function is () differential between oil and water.Athe temperatureBthe viscosityCthe gravityDthe size

单选题For a L√Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will ().Abe interruptedBmove downwardsCmove outwardsDretain original position

单选题When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent ().Aair from contacting the oil vaporsBpermitting re-ignition boiling of the heated oilCspontaneous combustion below the oil surfaceDtoxic fumes from escaping to the surface

单选题In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of ().AoilBsea waterCrefrigerantDfresh water

单选题Lube oil in the fresh water cooling system of a diesel engine may result from a ()Acamshaft seizureBlube oil pump failureClube oil cooler failureDlube oil pump overflow

单选题The function of lubricating oil is to ()Amaintain even distribution of bearing wearBmaintain a constant oil temperatureCmaintain a pressurized film between moving surfacesDremove entrained water

单选题In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of ().AoilBsea waterCairDfresh water

单选题Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and () in size.AexpandBextractCincreaseDdecrease

单选题Before the sludge in a purifier is ejected,()Athe oil feeding is stopped and replaced by admitting flushing waterBthe flushing water feeding is stopped and replaced by admitting oilCthe feeding of dirty oil and flushing water is stoppedDthe feeding of dirty oil and flushing water is admitted

单选题() is the breakdown of surface tension between oil droplets in an oil water mixture which causes them to join and increase in size.AWearBContaminatingCCoalescenceDCoarse separating