单选题The piston cooling system may employ similar components, except that a drain tank is used instead of a head tank That means this system （）.Adoesnt use a drain tank but a head tankBuses a drain tank not head tankCuses a drain tank and a head tankDuses neither a drain tank nor a head tank
单选题
The piston cooling system may employ similar components, except that a drain tank is used instead of a head tank That means this system （）.
A
doesnt use a drain tank but a head tank
B
uses a drain tank not head tank
C
uses a drain tank and a head tank
D
uses neither a drain tank nor a head tank
参考解析
解析：
暂无解析
相关考题：
Which two statements are true about the use of the procedures listed in the vsysaux_occupants.move_procedure column?() A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its current tablespace.B. The procedure may be used for some components to relocate component data from the SYSAUX tablespace to another tablespace.C. All the components may be moved into SYSAUX tablespace.D. All the components may be moved from the SYSAUX tablespace.
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
Piston cooling fins are locatedA.atop the piston crownB.beneath the piston crownC.at the base of the piston skirtD.inside the cylinder liner cooling water jacket
Low compressor head pressure in a refrigeration system can be caused by ___.A.insufficient condenser cooling waterB.excessive condenser cooling waterC.air in the refrigeration systemD.excessive refrigerant in the system
Why is it necessary to have routine testing of the cooling water?A.To ensure that the proper residuals of treatment chemicals, as specified, are maintained all timeB.To trace leakage in the cooling water systemC.It is not necessaryD.To detect the presence of contaminants in the water that may be injurious to the cooling system
Which of the following components provides for the BEST hardware cooling features？（）A、 Epoxy pasteB、 Chip fanC、 Heat sinkD、 Virtualization
A customer wants to install a pSeries system into an OEM rack. What critical information is provided in the Site and Hardware Planning Information manual？（）A、System dimensions and weight， system power and cooling requirements， and list of supported OEM racksB、System dimensions and weight， list of supported OEM racks， and requirements for installing IBM systems into OEM racksC、System performance specs， system power and cooling requirements， and requirements for installing IBM systems into OEM racksD、System dimensions and weight， system power and cooling requirements， and requirements for installingIBM systems into OEM racks
Which of the following accurately describes the meaning of redundant cooling？（）A、The source of cooling to a RAID systemB、The cooling system in a redundant power supplyC、A cooling system that can be installed in case of failureD、A second cooling system in case of a failure
单选题Low compressor head pressure in a refrigeration system can be caused by（）.Ainsufficient condenser cooling waterBexcessive condenser cooling waterCair in the refrigeration systemDexcessive refrigerant in the system
单选题If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）Aa low level in the engine expansion tankBexcessively high coolant pressureCimproper temperaturesDmalfunctioning of the jacket water heater
单选题Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.Alow compression pressureBincreased piston wearCincreased cylinder lube oil consumptionDpoor contact between compression rings and liner
单选题The piston crown employs the usual jet-shaker principle with an arrangement of cooling bores in the crown so that the surface temperatures of the crown are moderate with a very even distribution（）Awater coolingBoil coolingCair coolingDcombined cooling
单选题Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.Acylinder liners and piston ringsBmain bearingsCcrankpin bearingsDturboblower
单选题There is a （） system lubricating the running gear and cooling the piston and sometimes lubricating the cylinders.ArecirculatingBtotal lossCcoolingDrefrigeration
单选题In a closed cooling system for a turbocharged, four-stroke/cycle diesel engine, fluctuating water pressure can be caused by （）Aimproper venting of the cooling systemBcarrying the expansion tank water level too highCa totally clogged impeller in the cooling water pumpDan incorrectly set cooling system temperature control
单选题（） is sometimes used for piston cooling since leaks into the crankcase would not cause problems.ADiesel oilBHydraulic oilCLube oilDMineral oil
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.Adecreased piston to cylinder head clearanceBincreased exhaust system back pressureCearly fuel injection timingDlow scavenge air temperature
单选题Which of the following accurately describes the meaning of redundant cooling？（）AThe source of cooling to a RAID systemBThe cooling system in a redundant power supplyCA cooling system that can be installed in case of failureDA second cooling system in case of a failure
单选题As to the piston cooling, of the following, which statement is not true?（）ABecause the piston is exposed to very high temperature, it must be cooledBThe lower the piston cooling temperature is, the better it isCBoth water and lube oil can be used as coolantDOne of the piston cooling methods is vibration cooling, with better effect
单选题A separate piston cooling system is used to limit any contamination （） piston cooling glands（） the piston cooling system only.Abetween；toBeither；orCfrom；toDneither；nor
单选题As an alternative to the conventional seawater cooling system, is based on principles about cooler locations, （）flow control and preheating, but with a central cooler and one additional set of pumps（）.Athe central cooling system, differentBthe central cooling system, the sameCthe open cooling system, differentDthe open cooling system, the same
单选题Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of （）Alow loading of that cylinderBfaulty combustion in that cylinderCsluggish piston ring actionDexcessive piston cooling
单选题If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.Aloss of suction in the circulating pumpBleak in the primary cooling systemCbroken raw water pump shaftDburned or cracked piston in one cylinder
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 piston cooling system may employ similar components, except that （） is used instead of a head tank.Aa sump tankBa feed wellCa double bottom tankDa drain tank
单选题Diesel engine piston seizure can be caused by （）Apoor cooling of cylinder wallsBimproper cooling of the pistonCinsufficient piston lubricationDall of the above
单选题Piston cooling fins are located（）Aatop the piston crownBbeneath the piston crownCat the base of the piston skirtDinside the cylinder liner cooling water jacket