A. Higher B. Lower C. Same as oil injection air compressor D. The answer cannot be determined: B Analysis: Oil-free air compressors do not need to replace lubricants and oil filters, so the maintenance cost is low.
A. General Certification B. Medical certification C. Industrial certification D. No certification required answer: B. Medical certification
A. Improve production efficiency B. Reduce carbon emissions C. Ensure green manufacturing compliance D. Reduce maintenance costs Answer: C Analysis: Environmentally friendly oil-free air compressors combined with environmental management system certification meet IATF 1694…
A. 5% B. 11% C. 20% D. 30% answer: B Analysis: For every 1000 meters increase in altitude, the air density drops by about 11%.
A. Gas separation and storage B. Home use of C. Commercial places use D. Agricultural production uses answer: A. Gas separation and storage