【简答题】When we become s, we are asked the very same question twice as often. 3. as agers, we are expected to know exactly what we want to be and how we are going to achieve that goal 4. how am I supp...
【单选题】When the heat load begins to increase, the needle valve of an expansion valve will______.
A.
move in an opening direction
B.
move in a closing direction
【单选题】---What should I do if I want to shop online? ---____________.
A.
You have to register first.
B.
I think it is very useful.
C.
I often search for information online.
D.
Maybe the password is wrong. Try again.
E.
About an hour every day.
【单选题】If I want to clear the Command Window, what is the command I should send to Matlab?
【单选题】A thermostatic expansion valve is properly controlling evaporator superheatAdjusting 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
【单选题】When the refrigeration demand is small,_______.
A.
the expansion valve will move toward the wide open position
B.
the expansion valve will move toward the closing position
C.
the feeler bulb will conveys the high temperature
D.
the superheat degree will raise
【单选题】After passing through the expansion valve the refrigerant should be in the state of _____.
D.
None of the above is tree
【单选题】_ should be defroste
【简答题】按照安装位置可将轴流泵分为( )、( )和( )
【单选题】The scale trap is located between the .
A.
king valve and the expansion valve
B.
solenoid valve and expansion valve
C.
evaporator and receiver
D.
compressor and evaporator