海船船员考试
单选题One function of the thermal expansion valve is to（）A act as a pilot from the solenoid valveB regulate the amount of refrigerant flow to the coilC regulate the water flowD turn the compressor off and on
题目
act as a pilot from the solenoid valve
regulate the amount of refrigerant flow to the coil
regulate the water flow
turn the compressor off and on
相似问题和答案
第1题：
A customer would like to buy a new Power 750 and attach 2 PCIe I/O drawers. What is the minimum configuration which will support this？（）
- A、One processor card and one GX+ expansion card
- B、Two processor cards and one GX++ expansion card
- C、One processor card， one GX+ expansion card， and one GX++ expansion card
- D、Two processor cards， one GX+ expansion card， and one GX++ expansion card
正确答案:C
第2题：
lower thermal expansion rates than wet liners
greater heat transfer rate than wet liners
greater wear resistance than wet liners
procedure to replace dry liners is simpler than for wet liners
第3题：
When replacing a thermostatic expansion valve sensing bulb, it is necessary to
A.apply a light film of oil to increase heat transfer
B.apply a light film of oil to prevent oxidation
C.apply a heavy coating of grease to function as a heat sink
D.carefully coat the device with silicone sealant to reduce the effects of convective cooling
第4题：
king valve and the expansion valve
solenoid valve and expansion valve
evaporator and receiver
compressor and evaporator
第5题：
open
close
remain in its position
flood the evaporator with refrigerant
第6题：
compressor
cooling coils
condenser
receiver
第7题：
add refrigerant to the system
adjust the thermal expansion valve to the proper setting
adjust the float valve to the proper holding pressure
open the hand expansion valve
第8题：
A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the superheat will result in a/an
A.evaporator pressure decrease
B.evaporator coil over-feed
C.evaporator capacity increase
D.expansion valve diaphragm rupture
第9题：
Lube oil passing through the system
Moisture or foreign matter collecting at the valve seat and orifice
Variable spring tension caused by the changing temperature
Frost on the liquid line
第10题：
nonexistent
for controlling pressure
for controlling superheat
for controlling the solenoid valve