单选题Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except().AbacteriaBmouldsCyeastsDseals

单选题
Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except().
A

bacteria

B

moulds

C

yeasts

D

seals


参考解析

解析: 暂无解析

相关考题:

In the following statements about the principle of the low level controlling, which is WRONG? 0 A.Low level is monitored on the drain tank and header tank.B.If there is high differential the filters pressure across the circulatingpumps is alarmedC.The lubricating oil purifier cannot take oil from the drain tankD.If the sea water pressure falls, this also operates an alarm

第二组The only attention that heat exchanger should require is to ensure that the heat transfer surfaces remain substantially clean and the flow passages generally clear of obstruction. Indication that undue fouling is occurring is given by a progressive increase in the temperature difference between the two fluids, over a period of time, usually accompanied by a noticeable rise in pressure loss at a given flow.Fouling on the sea-water side is the most usual cause of deterioration in performance. The method of cleaning the sea water-side surfaces depends on the type of heat exchanger. With shell-and-tube heat exchangers, the removal of the header covers or, m the case of the smaller heat exchangers, the headers themselves, will provide access to the tubes. Obstructions, dirt, scale etc., can then be removed, using the tools provided by the heat exchanger manufacturer. Flushing through with fresh water is recommended before a heat exchanger is returned to service. In some applications, such as piston oil cooling, progressive fouling may take place on the outside of the tubes. Most manufactures recommend a chemical flushing pr6cess to remove this in situ~ without dismantling the heat exchanger.Plate heat exchangers may be cleaned by unclamping the stack of plates and mechanically cleaning the surface of each plate as recommended by the manufacturers. The plate seals may require replacement from time to time and here the manufacturers instructions should be closely followedBy which of the following indication, can we conclude that the lube oil-sea water heat exchanger is unduly fouled?A.the heat exchanger lube oil inlet temperature loweringB.the heat exchanger sea-water outlet pressure riseC.the heat exchanger temperature difference between lube oil and sea water increasingD.the heat exchanger pressure difference between sea water inlet and outlet decreasing

What is the most usual reason for the fresh water-sea water heat exchanger fouling in the sea side?A.lube oil sludge accumulating in itB.dirt and scale etc , formed on the surfacesC.deformation of the tubes and the shell or the platesD.lube oil leakage into sea-water side

Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except ______A.bacteriaB.mouldsC.yeastsD.seals

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

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

______is not a process of weathering of the oil spilled in the sea water.A.BiodegradationB.DissolutionC.Cleaning up by crew with skimmersD.Oxidation including photooxidation

______is not a process of weathering of the oil spilled in the sea water.A.EmulsificationB.Sedimentation / SinkingC.Oxidation including photooxidationD.Burning organized by RCC

污水井盖()A、bilge well coverB、ballast water coverC、fresh water coverD、sea water well

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The fresh water generator produces fresh water ().Aby cooling sea waterBby heating sea waterCby evaporation of sea waterDby purifying sea water

单选题Which of the following operations aboard a tanker must be recorded in the Oil Record Book ()AAny internal transfer of oil cargo during a voyageBThe discharge overboard in port or at sea of any bilge water accumulated in machinery spacesCThe loading or unloading of any or all oil cargoDAll of the above

单选题What should you apply to a fathometer reading to determine the depth of water?()ASubtract the draft of the vesselBAdd the draft of the vesselCSubtract the sea water correctionDAdd the sea water correction

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Oil pressure in the lubrication system is()than the static sea water head to ensure that sea water cannot enter the sterntube in the event of seal failure.AhigherBlowerCvery higherDvery lower

单选题Oil pressure in the lubrication system is () the static sea water head to ensure that sea water () the stem-tube.Alower than;can lubricateBlower than;can coolChigher than;can enterDhigher than ;cannot enter

单选题()is not a process of weathering of the oil spilled in the sea water.ABiodegradationBDissolutionCCleaning up by crew with skimmersDOxidation including photooxidation

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() is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.AThe fuel oilBThe lube oilCThe sea waterDThe fresh water

单选题In a diesel engine jacket water cooler, with seawater cooling the fresh water, the()Asea water temperature must never be warmer than 40℃Bjacket water pressure should always be greater than the sea water pressureCjacket water temperature must always be less than 60℃Djacket water pressure must always be less than the sea water pressure

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Which of the following operations must be entered on the Oil Record Book Part Ⅰ? () Ⅰ.Routine discharge at sea of bilge water containing oil from the machinery spaces Ⅱ.Bunkering of fuel oilAⅠ onlyBⅡ onlyCboth Ⅰ and ⅡDneither Ⅰ nor Ⅱ

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Where tanks are arranged for either oil or ballast () must be fitted in the pipe so that only the ballast main or the oil transfer main connected to the tank.Aa sea water chestBa change-over chestCa buffer tankDa three-way valve

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()is not a process of weathering of the oil spilled in the sea water.AEvaporationBDispersionCEmulsificationDDrifting

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