Moisture in a refrigeration system can cause _____.
A.freezing the expansion valve closed
B.corrosion of system piping
C.improper temperature regulation
D.all of the above
第1题
A.holed
B.fouled
C.clean
D.dry
第2题
A.remove combustibiles from direct exposure
B.cool the bulkhead around the fire
C.close all openings to the area
D.shut off electrical power
第3题
A.protective earth
B.isolators
C.ground switch
D.circuit-breakers
第4题
A.raise lube oil viscosity for easier starting in cold weather
B.increase air inlet temperature
C.increase compression ratio
D.increase jacket water temperature for easier starting in cold weather
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