
When can the history of air compressors go back?
- A. in 1873
- B. in 1871
- C. in 1965
- D. in 2017
Answer: A. in 1873
Answer: The flow rate range also varies depending on the specific model, usually covering from a few cubic meters per minute to tens of cubic meters per minute.
A. Higher B. Lower C. Same as oil injection air compressor D. The answer cannot be determined: A Analysis: The manufacturing cost of oil-free air compressors is usually high, and the initial investment is large, but the long-term maintenance cost is low.
A. Improve production efficiency B. Reduce carbon emissions C. Ensure green manufacturing compliance D. Reduce maintenance costs Answer: C Analysis: Environmentally friendly oil-free air compressors combined with environmental management system certification meet IATF 1694…
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. Annex A B. Annex C C. Annex D D. Annex E Answer: B Analysis: The exhaust volume standard corresponds to ISO 1217 Annex C.