网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
单选题
The device, which is installed in the compressor suction line to prevent liquid from entering the compressor when hot gas defrosting, is called a()
A

re-evaporator

B

receiver

C

dehydrator

D

solenoid


参考答案

参考解析
解析: 暂无解析
更多 “单选题The device, which is installed in the compressor suction line to prevent liquid from entering the compressor when hot gas defrosting, is called a()A re-evaporatorB receiverC dehydratorD solenoid” 相关考题
考题 If the suction pressure at the refrigeration compressor is below normal, the cause can beA.refrigerant overchargeB.overfeeding by the expansion valveC.a restricted suction strainerD.due to short cycling of the compress

考题 Sweating of the refrigeration system compressor crankcase is caused by_______ .A.too much superheatB.insufficient superheatC.suction pressure too lowD.excessive refrigerant returning to the compressor

考题 Which device is installed in user devices and makes wireless connections between them and a network?() A.Access pointB.BridgeC.RouterD.Client adapter

考题 If the suction pressure for an operating refrigeration compressor is below normal, the cause may be ______.A.an excess of liquid refrigerantB.the expansion valve overfeedingC.a fouled compressor suction strainerD.the compressor short cycling

考题 Which of the problems listed could cause erosion of the expansion valve disks and seats?A.Overcharging the system with refrigerantB.Faulty compressor suction valveC.Failure of the high pressure cutoutD.Flash gas formed in the liquid line

考题 In which of the following locations can Mike, a technician, configure and format a newly installed hard drive so that it is accessible to the user?()A、My ComputerB、Disk ManagerC、Device ManagerD、Control Panel

考题 Which device is installed in user devices and makes wireless connections between them and a network?()A、Access pointB、BridgeC、RouterD、Client adapter

考题 A technician plugs a USB device into the computer. The system tray displays a message that reports the device is installed, but may not work properly. Which of the following is the MOST likely cause of the message?()A、The device needs a firmware updateB、The device needs an updated driver installedC、The plugged in device is too slow for the USB port speedD、The device is incompatible with the installed version of Windows

考题 The Device Manager in Windows XP shows that an incompatible device driver is installed. Which of the following BEST describes the icon that is displaying next to that device?()A、Yellow question mark next to deviceB、Black checkmark next to deviceC、Yellow exclamation point next to deviceD、Red X next to the device

考题 Which of the following has to be installed on a laptop in order to use a compact flash storage device?()A、a multi-media card readerB、USB 2.0 driversC、USB 1.1 driversD、an enhanced 1.44 floppy drive

考题 You have been tasked with performing an update to the IDP attack database. Which three requirements areincluded as part of this task?()A、The IDP security package must be installed after it is downloaded.B、The device must be rebooted to complete the update.C、The device must be connected to a network.D、An IDP license must be installed on your device.E、You must be logged in as the root user

考题 单选题Which of the following statements describes the function of an air compressor intake filter?()A Protects against suction valve floatB Provides a positive pressure on the air inlet valvesC Prevents lubricating oil contamination of the compressed air supplyD Protects against the damaging effects of airborne solid particles

考题 单选题When liquid reaches the compressor of a refrigeration system through the suction line, the condition is called ().A flooding backB superheatingC overflowingD recycling

考题 单选题Which of the listed operations will cause an automatically controlled refrigeration compressor to restart?()A Closing of the solenoid valveB Closing of the expansion valveC An increase in the suction pressureD Decreasing the suction pressure

考题 单选题Foaming of the oil in a refrigeration compressor crankcase is caused by ().A refrigerant boiling out of solution from the lube oilB liquid refrigerant flooding the compressor and systemC lube oil viscosity being reduced by refrigerant dilutionD compressor suction pressure suddenly increasing

考题 单选题If the suction pressure at the refrigeration compressor is below normal, the cause can be().A refrigerant overchargeB overfeeding by the expansion valveC a restricted suction strainerD due to short cycling of the compressor

考题 多选题You have been tasked with performing an update to the IDP attack database. Which three requirements areincluded as part of this task?()AThe IDP security package must be installed after it is downloaded.BThe device must be rebooted to complete the update.CThe device must be connected to a network.DAn IDP license must be installed on your device.EYou must be logged in as the root user

考题 单选题A technician plugs a USB device into the computer. The system tray displays a message that reports the device is installed, but may not work properly. Which of the following is the MOST likely cause of the message?()A The device needs a firmware updateB The device needs an updated driver installedC The plugged in device is too slow for the USB port speedD The device is incompatible with the installed version of Windows

考题 单选题Excessive oil foaming in the crankcase of a refrigeration compressor at start up can cause().A compressor damage from improper lubricationB refrigerant absorption by the lubricantC increased viscosity in the lubricantD carbon deposit on the compressor suction valves

考题 单选题A relief valve for a cargo pump is generally installed().A after the discharge valveB between the pump and discharge valveC after the suction valveD between the pump and suction valve

考题 单选题An increase in the heat load to a refrigeration system will cause ().A the suction pressure to decreaseB the suction temperature to increaseC increased ice formation on the evaporator coilD excessive short cycling of the compressor

考题 单选题“Flooding back” is a condition where the liquid refrigerant ().A vaporizes in the condenserB reaches the compressor through the suction lineC flashes in the liquid lineD condenses in the receiver

考题 单选题The compressor suction line conveys the refrigerant vapor from () to ().A condenser;evaporatorB evaporator;compressorC compressor;condenserD None of the above

考题 单选题Through a () pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.A positive displacementB ejectorC centrifugalD air compressor

考题 单选题The purpose of the low pressure cut-out switch is to ().A maintain liquid refrigerant at the suction of the compressorB maintain a preset suction pressure to the compressorC start and stop the compressor at preset operating pressuresD operate at minimum efficiency

考题 单选题Which of the following problems would be the probable cause for the faulty operation of a reciprocating air compressor suction valve?()A Carbon build up in the piston ring beltB Faulty operation of a cylinder un-loaderC Compressor operation in an area of high relative humidityD Lifting of intercooler rebel valve

考题 单选题A sight glass is installed in the liquid line to indicate the condition of the refrigerant charge and may also indicate the ().A condition of the expansion valveB moisture in the systemC condition of the compressor suction valvesD condenser temperature