What are the characteristics of air compressors in terms of energy-saving technology?

Answer: The discharge capacity ranges from [A] to [B] m³/min.

A. Screw B. Piston C. Centrifugal wheel D. Scroll disk answer: B. piston

A. A few hundred yuan to several thousand yuan B. Thousands of yuan to tens of thousands of yuan C. Tens of thousands to hundreds of thousands of yuan D. Hundreds of thousands of yuan to several million yuan Answer: A. A few hundred yuan to several thousand yuan

A. General Certification B. Medical certification C. Industrial certification D. No certification required answer: B. Medical certification

Answer: Water lubricates the screw elements, cools the compressor, and helps to maintain optimal operating conditions.