14. The nominal displacement of an air compressor is 20m³/min, and the measured gas production is 16.8 m ³/min. The possible reasons are not included?

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.

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…

A.≤0.1μm B.≤0.01μm C.≤1μm D.≤10μm Answer: B Analysis: Automotive-grade compressed air needs to meet the strict requirements of dust content ≤0.01μm to ensure the production environment…

A. <0.1ppm B. <0.01ppm C. <1ppm D. <10ppm Answer: B Analysis: According to ISO 8573-1:2010…

A. Volume efficiency loss B. Air compressor brand premium C. Intake air temperature D. Filter pressure loss answer: B Analysis: Gas production is affected by mechanical efficiency, environmental factors and system matching, and has nothing to do with the brand.