Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
Answer: It offers superior energy efficiency, lower maintenance costs, and a longer lifespan.
A. Water lubrication B. Oil lubrication C. No need for lubrication D. Special lubricant lubrication Answer: D Analysis: Oil-free air compressors usually use special lubricants to cool and lubricate parts to ensure the purity of compressed air.
A. Annex A B. Annex C C. Annex D D. Annex E Answer: B Analysis: The exhaust volume standard corresponds to ISO 1217 Annex C.
Answer: Connect the compressor to a network and use a web-based interface or mobile app to monitor and control it remotely.
A. Price and brand B. Performance, price and brand C. Appearance and color D. Production date and transportation method Answer: B. Performance, price and brand