14. The nominal displacement of an air compressor is 20m³/min, and the measured gas production is 16.8 m ³/min. The possible reasons are not included?

A. Compressed air pure B. Low manufacturing cost C. Maintaining complex D. High energy consumption answer: A analysis: The main advantage of oil-free air compressors is that their compressed air is pure and oil-free, which is suitable for high purity requirements of compressed air…

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…

A. Spraying and sandblasting operations B. Home use of C. Commercial places use D. Agricultural production uses answer: A. Spraying and sandblasting operations

Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.

A. 0.1-0.3m³/min B. 1-3m³/min C. 5-10m³/min D. 10-15m³/min Answer: A Analysis: The sampling flow of monitoring equipment is usually 0…