A. high cost
B. limited application
C. maintain complex
D. Compressed air has high oil content
Answer: D
Analysis: Disadvantages of oil-free air compressors include high cost and limited scope of application, but low maintenance costs, pure compressed air and no oil content.
A. Low noise B. Efficient and stable C. Portable D. Medical certification answer: B. Efficient and stable
A. Cooling and lubricating compressor components B. Improve the purity of compressed air C. Reduce equipment noise D. Increase equipment life Answer: A Analysis: The lubricating oil system of the oil-injected air compressor injects lubricating oil into the compression chamber to start…
A. Annex B B. Annex C C. Annex D D. Annex E Answer: C Analysis: The gas production standard corresponds to ISO 1217 Annex D.
A. General B. Poor C. Better D. Very good answer: D. very good
A. High energy consumption B. Low energy consumption and high efficiency C. Maintaining complex D. High noise answer: B. Low energy consumption and high efficiency