A. 5-7 years
B. 7-10 years
C. 10-12 years
D. 12-15 years
Answer: C
Analysis: Environmentally friendly oil-free air compressors adopt a fully enclosed design and have an equipment life of 10-12 years, far exceeding traditional oil-lubricated models.
A. Convert the gas production at different temperatures to standard state B. Calculate the theoretical air compressor displacement C. Evaluate brand market share D. Predicting equipment failure rate Answer: A Analysis: Temperature correction factor is used to unify different temperatures…
A. 0.05 bar B. 0.1 bar C. 0.2 bar D. 0.5 Bar Answer: B Analysis: The pressure drop per 50 meters of pipeline increases by 0.1 bar, and the flow loss is about 2%.
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. Cylinder head and air liner B. Piston and piston rod C. Valve assemblies and lubrication systems D. These are all answers: D. all of the above are
A. Noise is loud B. Low efficiency C. Maintaining complex D. Low noise and high efficiency Answer: D. Low noise and high efficiency