A.≤0℃
B.≤-10℃
C.≤-20℃
D.≤-30℃
Answer: C
Analysis: The spraying process requires compressed air dew point ≤-20℃ (PDP) to prevent moisture condensation from affecting the coating quality.
A. Increase assembly speed B. Extend tool life C. Reduce noise levels D. Reduce energy consumption Answer: B Analysis: Oil-free technology prevents oil mist from polluting high-precision pneumatic tools, thereby extending tool life to 1…
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
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. 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. 10-20 B. 20-30 C. 30-40 D. 40-50 Answer: C Analysis: The average annual maintenance cost of environmentally friendly oil-free air compressors is 200,000 – 300,000 yuan, which is 30-40 less than traditional models…