What is the difference between traditional oil-lubricated air compressors and environmentally friendly oil-free air compressors in terms of dew point stability?

A. 1-3% B. 8-12% C. 15-25% D. 30-40% Answer: B Analysis: The gap leakage loss of the screw machine is 8-12%, and the reciprocating gap volume loss is even higher.

Answer: The competitive advantages include high energy efficiency, no oil contamination, low maintenance costs, long service life, as well as strong brand influence and technical support.

A. 10-20 B. 20-30 C. 30-40 D. 40-50 Answer: C Analysis: The average annual maintenance cost of environmentally friendly oil-free air compressors is 200,000 – 300,000 yuan, which is 30-40 less than traditional models…

Answer: Common faults include high temperature, low pressure, and motor overload.

Answer: It ensures the purity of compressed air, which is essential for food safety and quality.