A. 1 bar, 20℃, 0% humidity
B. 1 atm, 25℃, 50% humidity
C. 1.5 bar, 30℃, 30% humidity
D. 1.2 bar, 15℃, 20% humidity
Answer: A
parsing: ISO 1217 specifies the standard state as 1 bar, 20℃, 0% humidity.
A. Higher cost B. Limited scope of application C. Maintaining complex D. Compressed air has high oil content Answer: D analysis: The shortcomings of oil-free air compressors include high cost and limited scope of application, but low maintenance costs, compressed air…
Answer: Common faults include high temperature, low pressure, and motor overload.
Answer: It adopts an efficient compressor design, optimized system control, and water lubrication technology to reduce energy consumption and improve efficiency.
A. 1873 B. 1871 C. 1965 D. Answer in 2017: A. in 1873
Answer: The main features include energy efficiency, low pressure operation, oil-free water lubrication, and high reliability.