單項(xiàng)選擇題

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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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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