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
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相关考题
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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 -
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 -
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
