A. high cost
B. limited application
C. maintain complex
D. Compressed air has high oil content
Answer: D
Analysis: Disadvantages of oil-free air compressors include high cost and limited scope of application, but low maintenance costs, pure compressed air and no oil content.
Answer: It uses water lubrication and does not produce any oil-related emissions.
Answer: It ensures the purity of compressed air, which is essential for food safety and quality.
Answer: The motor power varies depending on the compressor model and flow demand, with specifications such as 5.5kW, 7.5kW, 11kW, etc.
Answer: It is mainly used in medical, food, electronics, chemical, textile, and other industries where high air quality is required.
Answer: It provides clean, dry compressed air for electronic manufacturing processes.