单选题Strainers are commonly used in hydraulic systems to ().Aprotect the pump from fine soluble contaminantsBprevent solid particles from entering the pumpCprevent solid particles from entering the filterDprotect the directional control valves

单选题
Strainers are commonly used in hydraulic systems to ().
A

protect the pump from fine soluble contaminants

B

prevent solid particles from entering the pump

C

prevent solid particles from entering the filter

D

protect the directional control valves


参考解析

解析: 暂无解析

相关考题:

Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?A.hydraulic pumpsB.valvesC.hydraulic cylindersD.hydraulic motors

After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?A.The relief valves in the system should be readjustedB.The filters and strainers should be checked frequentlyC.All system pressure should be readjustedD.The system should be drained and renewed with a fluid of different operating characteristics

Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?A.hydraulic pumpsB.valvesC.hydraulic cylindersD.hydraulic motors

In computing.a device driver (commonly referred to as simply a driver) is acomputerprogram that operates or controls a particular type of device that is attached to a computer.Adiver provides (71) to hardware devices,enabling operating systems and other computerprograms to access hardware functions without needing to know precise details of thehardware being used.A.a software interfaceB.a programming languageC.a functionD.an Internal Bus

Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?A.hydraulic pumpsB.valvesC.hydraulic cylindersD.hydraulic motors

______ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.A.MotorsB.Check valvesC.Safety valvesD.Reducing valves

Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ______.A.fluid frictionB.fluid turbulenceC.component misalignmentD.pressure surges

______ is not usually used in liquid cargo systems.A.Hydraulic drive systemsB.Electric drive systemsC.Steam drive systemsD.Man-powered drive systems

Which of the following protocols is commonly used by ping?()A、SIPB、ICMPC、TFTPD、ARP

Which of the following protocols is commonly used for VoIP technology?()A、TelnetB、SMTPC、SIPD、SNMP

单选题Which of the following hydraulic systems is not one of the three sub-division of the Hydraulic drive system?()AConstant pressure systemBVariable pressure systemCVariable displacement systemDConstant volume system

单选题A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oilAnother function is to()Aact as a shock absorberBmaintain the stored oil under pressureCact as a base or foundation for the power unitDeliminate pressure surges in the system

单选题() play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.AMotorsBCheck valvesCSafety valvesDReducing valve

单选题Hydraulic pumps most commonly used in steering systems are of the ().Alobe typeBscrew typeCaxial piston typeDvolute type

单选题Strainers are commonly used in hydraulic systems to ().Aprotect the pump from fine soluble contaminantsBprevent solid particles from entering the pumpCprevent solid particles from entering the filterDprotect the directional control valves

单选题After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?()AThe relief valves in the system should be readjustedBThe filters and strainers should be checked frequentlyCAll system pressure should be readjustedDThe system should be drained and renewed with a fluid of different operating characteristics

单选题In which of the listed hydraulic systems will the installation of an oil cooler be necessary?()AConstant tension mooring winch systemBHatch cover systemCWatertight door systemDInternal combustion engine hydraulic starter system

单选题Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?()AThe hydraulic pumpsBValvesCHydraulic cylindersDHydraulic motors

单选题() are commonly used in mechanical-hydraulic governor(调速器) to sense engine speeds.ABulbsBBulksCFlyweightsDFlywheels

单选题Hydraulic cranes must be properly warmed-up before being operated because ().Awarm-up allows the hydraulic system to become charged with oilBwarm-up allows the relief valves to be properly testedChydraulic strainers operate only during the warm-up periodDhydraulic fluid must be at the proper viscosity

单选题External and internal leakage in hydraulic systems may be caused by ().Aunusual vibrationBexcessive worn partsCabnormal pressureDany of the above

单选题An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().Aaeration of the oilBcontamination of the oilCpump cavitationDspongy actuator movements

单选题Compensated flow control or constant flow valves are used in hydraulic systems to()Acompensate for major leaks in the systemBmaintain the original fluid viscosityCallow for changes in pressure and temperature within the systemDassure constant fluid temperature

单选题Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ().Afluid frictionBfluid turbulenceCcomponent misalignmentDpressure surges

单选题Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means ().Alubricating oilBlubricating oil systemsCstrainersDcartridges

单选题The most common forms of main drive used on deck auxiliaries are ().Asteam plants, electric motors and compressed airBdiesel engine, hydraulic machinery and compressed airCsteam plants, electric motors and hydraulic machineryDdiesel engines, steam plants and hydraulic machinery

单选题The hydraulic () is used to control engine speed.AmotorBpumpCgovernorDcapstan

单选题Hydraulic machinery failures are commonly caused by misalignment of the system components and by ().Ahydraulic fluid contaminationBexcessive fluid frictionCturbulent fluid flowDfluid pressure surges