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
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
The part of the anchor windlass that engages the anchor...
单项选择题The part of the anchor windlass that engages the anchor chain for lifting is called the （）.
A.warping head B.fairlead C.wildcat D.capstan
If a refrigeration compressor were short cycling on the...
单项选择题If a refrigeration compressor were short cycling on the low pressure cutout switch, the probable cause for this might be the （）.
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
