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
Zinc rods are installed in the refrigeration system （）.
A
liquid strainer
B
liquid receiver
C
saltwater condenser
D
evaporator
参考答案
参考解析
解析：
暂无解析
更多 “单选题Zinc rods are installed in the refrigeration system （）.A liquid strainerB liquid receiverC saltwater condenserD evaporator” 相关考题
考题
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
考题
Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid line If excess moisture is present in the system, the indicator willA.activate the driersB.change colorC.secure the compressorD.add a predetermined amount of liquid drier
考题
The refrigeration system low pressure cutout switch is actuated by______.A.an electric system managerB.a sensing bulb at the tail coil of the evaporatorC.pressure changes in the suction lineD.failure of the king solenoid valve
考题
What is the difference between the CUoD and Utility Capacity On Demand?（）A、Utility allows for activation of resources by the hour. CUoD allows for permanent access to additional resources installed into the system.B、Utility allows for permanent access to additional resources installed into the system. CuOD allows for activation of resources by the hour.C、Utility allows for activation of resources by the minute. CUoD allows for permanent access to additional resources installed into the system.D、Utility allows for a 30 day usage of additional resources installed into the system. CUoD allows for permanent access to additional resources installed into the system.
考题
What is a design consideration when using existing PCIe I/O drawers in a maximum bandwidth/throughput configuration on a new Power 750 system?（）A、The new system requires 1 installed processor card for the GX++ bus adapterB、The new system requires a minimum of 2 installed processor cards for the GX++ bus adapterC、The new system requires a minimum of 3 installed processor cards and the HPC InfiniBand cluster adapterD、The new system requires 1 installed processor card for the GX++ bus adapter and the HPC InfiniBand cluster adapter
考题
单选题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
考题
单选题Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will （）A
activate the driersB
change colorC
secure the compressorD
add a predetermined amount of liquid drier
考题
单选题The refrigeration system low pressure cutout switch is actuated by （）.A
an electric system managerB
a sensing bulb at the tail coil of the evaporatorC
pressure changes in the suction lineD
failure of the king solenoid valve
考题
单选题The latent heat of evaporation is dissipated in the （） in a compression refrigeration system.A
evaporatorB
condenserC
expansion valveD
compressor
考题
单选题What is a design consideration when using existing PCIe I/O drawers in a maximum bandwidth/throughput configuration on a new Power 750 system?（）A
The new system requires 1 installed processor card for the GX++ bus adapterB
The new system requires a minimum of 2 installed processor cards for the GX++ bus adapterC
The new system requires a minimum of 3 installed processor cards and the HPC InfiniBand cluster adapterD
The new system requires 1 installed processor card for the GX++ bus adapter and the HPC InfiniBand cluster adapter
考题
单选题In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by（）A
opening more bypass linesB
opening additional expansion valvesC
adding refrigerantD
speeding up the machine
考题
单选题In a refrigeration system, the refrigerant absorbs the latent heat of vaporization in the（）.A
compressorB
condenserC
receiverD
evaporator
考题
单选题When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be （）.A
dehydratedB
purgedC
pluggedD
evacuated
考题
单选题The function of （） in a refrigeration plant using Freon is to move moisture from all refrigeration system.A
filterB
filter drierC
heat exchangerD
air cooler
考题
单选题Air or noncondensable gas is removed from a refrigeration system by a （）A
separating chamberB
system of bafflesC
purge valveD
vacuum reducing valve
考题
单选题Zinc rods are installed in the refrigeration system （）.A
liquid strainerB
liquid receiverC
saltwater condenserD
evaporator
考题
单选题The refrigeration compressor in a water cooled refrigeration system is short cycling on the high pressure cutout switch， One reason for this could be the （）.A
system is low on refrigerantB
high pressure cutout switch is improperly adjustedC
discharge valves are leaking slightlyD
discharge valves are leaking excessively
考题
单选题In which of the listed refrigeration system components does superheating of the refrigerant take place?（）A
Expansion valveB
EvaporatorC
DrierD
Receiver
考题
单选题Which of the following statements is correct concerning a typical shipboard multi-coil refrigeration system?（）A
The liquid receiver functions to collect and remove non-condensable gasesB
A thermostatic expansion valve is used to control refrigerated space temperatureC
Refrigerant temperature in an evaporator is directly related to refrigerant pressureD
Dehydrators must be used continuously in a refrigeration system
考题
单选题Refrigerant is circulated through a refrigeration system by the （）.A
compressorB
condenserC
expansion valveD
evaporator
考题
单选题Saltwater is typically provided to a refrigeration system to （）.A
cool the expansion valveB
prevent refrigerant superheatingC
condense the refrigerant gasD
prevent motor overheating
考题
单选题Moisture in a refrigeration system can cause （）.A
freezing the expansion valve closedB
corrosion of system pipingC
improper temperature regulationD
all of the above
考题
单选题Under normal conditions, the refrigerant enters the compressor in an operating refrigeration system as a （）.A
liquidB
dry saturated gasC
wet saturated gasD
superheated vapor
考题
单选题A solenoid valve used in a refrigeration system should be installed （）.A
with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valveB
upright, sensing temperature of the box, and upstream of the thermal expansion valveC
upright, sensing temperature of the box, and downstream of the thermal expansion valveD
upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
考题
单选题Which of the listed statements is correct concerning refrigeration systems?（）A
Dehydrators must be used continuously in a refrigeration systemB
A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hoursC
A thermostatic expansion valve is used to control refrigerated space temperatureD
The liquid receiver functions to collect and remove non- condensable gases
考题
单选题Which of the listed refrigeration system components keeps the refrigerant circulating through the system?（）A
Expansion valveB
CondenserC
EvaporatorD
Compressor
热门标签
最新试卷