单项选择题X 纠错
A.under heavy loads
B.during hot gas defrost
C.under light loads
D.during starting conditions
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单项选择题
A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
单项选择题
A.Constant tension mooring winch system
B.Hatch cover system
C.Watertight door system
D.Internal combustion engine hydraulic starter system
单项选择题
A.Carbon build up in the piston ring belt
B.Faulty operation of a cylinder un-loader
C.Compressor operation in an area of high relative humidity
D.Lifting of intercooler rebel valve
单项选择题
A.system was overcharged with refrigerant
B.system was low on refrigerant
C.suction valves were leaking slightly
D.relief valve was leaking slightly
单项选择题
A.broken inlet valves
B.broken discharge valves
C.pulsations in the air distribution system
D.overloading of the air distribution system
单项选择题
A.warping head
B.fairlead
C.wildcat
D.capstan
单项选择题
A.system was overcharged with refrigerant
B.high pressure switch was improperly adjusted
C.expansion valve strainers were fouled
D.suction valves were leaking slightly
单项选择题
A.increased pump speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.low pump speed
单项选择题
A.Lube oil passing through the system
B.Moisture or foreign matter collecting at the valve seat and orifice
C.Variable spring tension caused by the changing temperature
D.Frost on the liquid line
单项选择题
A.an immediate crankcase explosion
B.oil contamination in the compressed air
C.a decrease in compressor capacity
D.no immediate loss of the compressed air capacity