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
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
If the pump for a hydraulic anchor windlass is over hea...
单项选择题If the pump for a hydraulic anchor windlass is over heating, the cause may be （）.
A.increased pump speed B.excessive pump discharge pressure C.too low of a tilting box angle D.low pump speed
