Answer: It is widely used in medical, food and beverage, electronics, pharmaceutical, chemical, textile, and laboratory industries.
A. Annex B B. Annex C C. Annex D D. Annex E Answer: C Analysis: The gas production standard corresponds to ISO 1217 Annex D.
A. Wear of cylinder head and air liner B. Piston and piston rod damage C. Valve assembly failure D. These are all answers: D. all of the above are
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
A. Higher B. Lower C. Same as oil injection air compressor D. The answer cannot be determined: B Analysis: Oil-free air compressors usually consume less energy and improve energy efficiency due to reduced use of lubricating oil.
Answer: Follow the manufacturer’s instructions for safe shutdown procedures to avoid damage to the compressor.