A. higher
B. lower
C. Same as injection air compressor
D. unable to determine
Answer: A
Analysis: Oil-free air compressors are usually costly to manufacture, with large initial investment, but low long-term maintenance costs.
Answer: It ensures the purity of compressed air, which is essential for food safety and quality.
A. There are oil screw air compressors, oil-free screw machines, centrifuges, vacuum pumps, etc. B. Air compressors used in homes and air compressors used in commercial places C. Air compressors for the oil and natural gas industry, air compressors for the construction industry D. Manufacturing air compressors,…
A. ISO 50001 B. Germany Tüv “0” level oil-free certification C. CE certification D. IATF 16949 Answer: B Analysis: Germany’s Tüv “0” level oil-free certification is specially used for testing…
Answer: The compressor uses water instead of oil to lubricate the screw elements, eliminating the risk of oil contamination in the compressed air.
A. High noise B. Low noise C. High power D. Low power answer: B. low noise