A. 5%-10% B. 10%-15% C. 15%-20% D. 20%-28% Answer: D analysis: Permanent magnet frequency conversion technology combined with oil-free compression can significantly improve energy efficiency, reducing it by 20%-28…
Answer: Common faults include high temperature, low pressure, and motor overload.
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
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…
A. 5-7 Year B. 7-10 Year C. 10-12 Year D. 12-15 Answer: C analysis: Environmentally friendly oil-free air compressor adopts a fully enclosed design, and the equipment life can reach 10-12 years, far exceeding traditional oily lubrication…