单选题Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?()AThe greater the atomization, the greater the penetrationBThe greater the atomization, the less the penetrationCThe degree of atomization has nothing to do with the degree of penetrationDAtomization and penetration are one and the same

单选题
Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?()
A

The greater the atomization, the greater the penetration

B

The greater the atomization, the less the penetration

C

The degree of atomization has nothing to do with the degree of penetration

D

Atomization and penetration are one and the same


参考解析

解析: 暂无解析

相关考题:

All the following statements concerning the nature of language change is true except() A language change is inevitableB language change is abruptC language change is universalD language change is extensive

Which of the following problems is the main source of fuel pump and injection system malfunctions?A.Improper lubricationB.Air in the fuel systemC.Coated fuel linesD.Excessive vibration

Which of the following statements concerning intellectual property is wrong?()A、Intellectual property is an intangible creationB、Intellectual property in ludes patents,trademarks,copyrights,etc.C、Intellectual property is a visible creationD、There are some agreement sconcerning intellectual property under the WTO

单选题Which of the following statements concerning energy is correct?()AEnergy can be created or destroyedBEnergy may not be transformedCThe total quantity of energy in the universe is always the sameDNone of the above

多选题Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)Ac=dBl and k are parallelCm and l are perpendicular

单选题Which of the following statements concerning cargo is correct?()ACargoes are any type of goods transported by any type of shipsBCargoes are goods transported in bulkCCargoes usually include goods transported in bulk and in containersDCargoes are usually packaged in containers

单选题Which of the following problems is the main source of fuel pump and injection system malfunctions?()AImproper lubricationBAir in the fuel systemCCoated fuel linesDExcessive vibration

单选题Which of the following statements concerning butterfly valves is correct?()ASpecial tools are required for lapping or grindingBIt is impossible to throttle flow with a butterfly valveCTo close the valve, it is only necessary to turn the handle a quarter of a turnDThe butterfly valve should never be used in a freshwater system

单选题Which of the following statements is true concerning centrifugal pumps?()AThey are particularly suited for pumping high viscosity fluidsBThey are started with the discharge valve openedCThe flow of liquid is developed by imparting energy due to the rotation of an impellerDThey are always mounted in a horizontal position

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Which of the following statements is correct concerning a typical shipboard multi-coil refrigeration system?()AThe liquid receiver functions to collect and remove non-condensable gasesBA thermostatic expansion valve is used to control refrigerated space temperatureCRefrigerant temperature in an evaporator is directly related to refrigerant pressureDDehydrators must be used continuously in a refrigeration system

单选题Which of the following statements concerning intellectual property is wrong?()AIntellectual property is an intangible creationBIntellectual property in ludes patents,trademarks,copyrights,etc.CIntellectual property is a visible creationDThere are some agreement sconcerning intellectual property under the WTO

单选题Which of the following statements concerning fire-tube boilers is correct?()ACombustion gases flow through the tubesBFlames impinge on the tubesCCombustion occurs in the tubesDWater flows through the tubes

单选题Which of the following statements is true concerning the cetane number of diesel fuel?()AThe cetane number affects the amount of injection lagBThe cetane number is an indication of the fuels viscosityCIgnition lag is reduced with fuels having a high cetane numberDThe cetane number is of little significance in the combustion process

单选题Which of the following statements is true concerning the cetane number rating of diesel fuel? ()AThe cetane number is obtained by comparing the fuel with cetane a colorless liquid hydrocarbonBThe higher the cetane number, the shorter the ignition lagCThe highest cetane number of fuel is 100DAll of the above

单选题Which of the following statements is correct concerning the “flash point ” of a liquid?()AIt is lower than the ignition temperatureBIt is the temperature at which a substance will spontaneously igniteCIt is the temperature at which a substance, when ignited, will continue to bumDIt is the temperature at which the released vapors will fall within the explosive range

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 amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load.Which of the following statements describes this requirement?()AProper timingBAccurate meteringCSuitable injection rateDSuitable atomization rate

单选题Which of the following statements is true concerning simple parallel resistance circuits?()AThe total current flow equals the sum of the individual currentsBThe total current flow equals the reciprocal of the sum of the individual currentsCThe total resistance equals the sum of the individual resistanceDThe total voltage equals the sum of the individual voltages across each resistance

单选题Which of the following statements is least likely to cause the ignition of fuel vapors?()AStatic electricityBAn open running electric motorCLoose wiringDExplosion proof lights

单选题Which of the following statements is true concerning Halon 1301 fire extinguishing equipment?()AThe agent is considered nontoxic at room temperature in low concentrationsBThe agent is less effective than carbon dioxideCHalon primarily extinguishes the fire by coolingDThe agent cannot be used on electrical fires because it leaves a residue

单选题Which of the following statements is correct concerning the viscosity of lubricating oil?()AViscosity will increase as temperature increasesBViscosity is a measure of a fluid s internal resistance to flowCViscosity will decrease as temperature decreasesDViscosity is not dependent on temperature

单选题Which of the following statements describes the results of excessive microbiological growths within a fuel system?()Aall excessive amounts of growth will cause the main engines of the vessel to stall due to the inability to supply the proper quantities of fuel to satisfy the existing loadBThe deposits produced by these growths form blockages and flow restrictions ultimately leading to improper atomization of the fuel into the cylindersCEventually the growth of these organisms will deplete the supply of food available to them, which in turn will cause their demiseDIf continual growth is permitted, a sweet odor similar to that associated with baking will be noticed when system components are opened for inspection