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
Which of the following problems would be the probable c...
单项选择题Which of the following problems would be the probable cause for the faulty operation of a reciprocating air compressor suction valve?（）
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
If a refrigeration crankcase compressor were short cycl...
单项选择题If a refrigeration crankcase compressor were short cycling on the low pressure cutout switch, the cause might be that the （）.
A.system was overcharged with refrigerant B.system was low on refrigerant C.suction valves were leaking slightly D.relief valve was leaking slightly
Air blowing from the intake air filter of an operating ...
单项选择题Air blowing from the intake air filter of an operating air compressor indicates （）.
A.broken inlet valves B.broken discharge valves C.pulsations in the air distribution system D.overloading of the air distribution system
