单选题A centrifugal compressor’s purge recovery unit（）Areclaims waterBpurges air without losing refrigerantCpurges air with some loss of refrigerantDpurges lube oil from the refrigerant
单选题
A centrifugal compressor’s purge recovery unit（）
A
reclaims water
B
purges air without losing refrigerant
C
purges air with some loss of refrigerant
D
purges lube oil from the refrigerant
参考解析
解析：
暂无解析
相关考题：
On an anchor windlass，the wheel over which the anchor chain passes is called a______．A.brake compressor wheelB.devil's clawC.wildcatD.winch head
Which two statements are true about a Work Item with "Open" Notification? ()(Choose two.) A. The Work Item is not eligible for Purge.B. The Work Item is eligible for a Permanent purge.C. The Work Item is eligible for a Temporary purge.D. The Work Item is not complete because it still has Open Notification.E. The Work Item is eligible for both Temporary and Permanent purge.
If a refrigeration compressor is short cycling on high head pressure, you shouldA.purge the condenser if the waterside is dirtyB.check for proper water flow through the condenserC.increase the high pressure cutout settingD.reduce the cooling water flow
In a chilled(冷的) water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ______.A.increasing refrigerant pressure in the coilB.increasing chilled water flow through the coolerC.sub-cooling the refrigerant in the condenserD.superheating the refrigerant in the compressor
华为S9300系列交换机采用分布式硬件平台，S9300的硬件系统由哪些部分组成（）A、机箱、背板B、电源模块、风扇框C、主控板SRU（Switch Routing Unit）或主控板MCU（Main Control Unit）D、线路板LPU（Line Processing Unit）和集中监控板CMU（Central Management Unit）
What is the difference between thE.remove and thE.purge action with the dpkg command？（）A、 -remove removes the program， -purge also removes the config filesB、 -remove only removes the program， -purge only removes the config filesC、 -remove removes a package， -purge also removes all packages dependent on itD、 -remove removes only the package file itself， -purge removes all files related to the package
You are performing a database recovery because a user’s schema is dropped. While performing the recovery， you use the UNTIL SEQUENCE clause. Which type of database recovery are you performing？（）A、 user managed complete recoveryB、 user managed incomplete recoveryC、 RMAN-based complete recoveryD、 RMAN-based incomplete recovery
You need to recommend a BitLocker recovery method that meets the company’s technical requirements. Which recovery method should you recommend？（）A、a data recovery agentB、a recovery keyC、a recovery password printed and stored in a secure locationD、a recovery password stored in Active Directory
单选题What is the difference between thE.remove and thE.purge action with the dpkg command？（）A -remove removes the program， -purge also removes the config filesB -remove only removes the program， -purge only removes the config filesC -remove removes a package， -purge also removes all packages dependent on itD -remove removes only the package file itself， -purge removes all files related to the package
单选题You are performing a database recovery because a user’s schema is dropped. While performing the recovery， you use the UNTIL SEQUENCE clause. Which type of database recovery are you performing？（）A user managed complete recoveryB user managed incomplete recoveryC RMAN-based complete recoveryD RMAN-based incomplete recovery
单选题Which one is not the component of a typical, marine pattern self-contained unit?（）Aa centrifugal fanBa direct expansion coolerCa hermetic compressorDa centrifugal pump
单选题The unloading system on an air compressor will （）.Aincrease compressor discharge pressure on demandBincrease compressor operating speed as necessaryCallow the motor to turn the compressor opposed only by frictionDreduce the compressor frictional load when starting
单选题You need to recommend a BitLocker recovery method that meets the company’s technical requirements. Which recovery method should you recommend？（）Aa data recovery agentBa recovery keyCa recovery password printed and stored in a secure locationDa recovery password stored in Active Directory
单选题The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to （）.Atransmit the rudder angle to the bridge indicatorBprevent the control linkage from striking the stops when hard overCautomatically purge all entrained air from the systemDsend hydraulic signals to the receiving unit
单选题On an anchor windlass，the wheel over which the anchor chain passes is called a（）.Abrake compressor wheelBdevil's clawCwildcatDwinchhead
单选题Before charging a refrigeration unit, the refrigerant charging lines should be（）Aflushed with clean refrigerant oilBpurged with the refrigerantCwashed with an ammonia and alcohol solutionDgrounded to compressor
单选题（）is used in typical marine pattern self-contained unit.Aa water cooled condenserBa slop tankCa expansion tankDa centrifugal pump
单选题In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by （）.Aincreasing refrigerant pressure in the coilBincreasing chilled water flow through the coolerCsub-cooling the refrigerant in the condenserDsuperheating the refrigerant in the compressor
单选题What does a SART signal sound or look like?（）AIt transmits SOS and the vessel's name and position in slow speed Morse CodeBIt will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's positionCIt will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's positionDNone of the above
单选题To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should （）Aadmit only enough fresh outside air to provide proper ventilationBreduce the air reheating system loadClower the compressor head pressureDoperate the purge recovery unit continuously
单选题Centrifugal pumps are non-positive and a fairly （） unit.Alow pressureBlow dischargeClow speedDhigh pressure
单选题A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）Apurge lube oil from the liquid refrigerantBrecover water purged from the systemCseparate foul gases from the receiverDpurge non-condensable gases without losing refrigerant
单选题Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）Achanging the air filterBrecharging the systemCchanging compressor lubricantDrenewing container vacuum
单选题Which of the following actions should be taken if during a routine maintenance inspection of a centrifugal pump, localized scoring on a pump shaft sleeve is detected?（）ACorrect the cause of the scoring and repair the sleeve or replace with a new oneBReassemble the unit and provide more water leak off for proper lubricationCCheck for parallel alignment of the sleeve radial faces to the sleeve boresDReassemble the unit and adjust the governor to obtain a slower speed
单选题The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as（）Aopposing operational dragBpressure distributionCdifferentialDsystem purge
单选题“This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density（）, drives the compressor directly（）Aa modern diesel engine；a turbine wheelBa modem diesel engine；exhaust gasesCa compressor；an exhaust gas turbochargerDa compressor；a turbine wheel
单选题In a storm，the leeward lines of a ship’s mooring system will（）.Apull the unit in the same direction that the weather is pushing itBpull the unit in the opposite direction that the weather is pushing itCtend to keep the unit on its original location over the well headDaffect the unit's draft and inclination as maximum mooring tensions are reached