单项选择题
A.expansion tank B.combustion chamber C.air receiver D.evaporator
The air compressor pumps air to the （）.A.air cylinderB....
单项选择题The air compressor pumps air to the （）.
A.air cylinder B.combustion chamber C.steam drum D.expansion tank
The （） stage air compressors are widely used on board t...
单项选择题The （） stage air compressors are widely used on board the ship.
A.single B.Ⅱ C.Ⅲ D.multiple
The air filter is fixed in the （） of an air compressor....
单项选择题The air filter is fixed in the （） of an air compressor.
A.inlet pipe B.outlet pipe C.inter cooler D.after cooler
