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 300,000 – 400,000 yuan lower than traditional models.
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
A. Compressed air pure B. Low manufacturing cost C. Maintaining complex D. High energy consumption answer: A analysis: The main advantage of oil-free air compressors is that their compressed air is pure and oil-free, which is suitable for high purity requirements of compressed air…
A. High noise B. Low noise C. High power D. Low power answer: B. low noise
Answer: It must meet strict standards for purity and reliability to ensure the quality of pharmaceutical products.
A.≤0.5%FS B.≤1%FS C.≤1.5%FS D.≤ 2% FS Answer: A Analysis: Environmentally friendly oil-free air compressors need to meet pressure fluctuations ≤ 0.5% FS (0.7-1.0MP…