A. lower
B. higher
C. Same as oil-free air compressor
D. unable to determine
Answer: B
Analysis: The lubricating oil from the oil-sprayed air compressor will be partially mixed into the compressed air, resulting in a high oil content in the compressed air.
A. Price and brand B. Performance, price and brand C. Viscosity and quality of lubricating oil D. Production date and transportation method Answer: C. Viscosity and quality of lubricating oil
A. Food and beverage, pharmaceuticals, medical B. Home use, commercial use C. Oil and gas, construction, logistics D. Manufacturing, oil and gas, construction Answer: A. Food and beverage, pharmaceuticals, medical
A. 1-3% B. 8-12% C. 15-25% D. 30-40% Answer: C Analysis: The clearance volume of reciprocating air compressor causes a 15-25% efficiency decrease.
Answer: The discharge capacity ranges from [A] to [B] m³/min.
A. Improve the purity of compressed air B. Reduce equipment noise C. Cooling and lubricating parts D. Increase equipment life Answer: C Analysis: The water-lubricated design of oil-free air compressors is mainly used to cool and lubricate compressor components to ensure…