A.anemometer
B.potentiometer
C.manometer
D.psychrometer
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A.opening more bypass lines
B.opening additional expansion valves
C.adding refrigerant
D.speeding up the machine
A.manifold
B.condenser
C.chamber
D.plenum
A.defective thermal bulb
B.clogged scale trap
C.stuck high-pressure switch
D.stuck low-pressure switch
A.insufficient refrigeration
B.leaky suction valves
C.expansion valve stuck open
D.suction valve not adjusted properly
A.too much cooling water going through the condenser
B.not enough refrigerant in the system
C.a leak in the evaporator coils
D.no enough cooling water going through the condenser
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Diesel engine air start system check valves are opened by （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
To proceed to the assistance of a ship in distress is（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The shipboard oil pollution emergency plan will be invalid after （）