A. compression method
B. cooling method
C. lubrication method
D. control mode
Answer: C
Analysis: Oil injection air compressors use lubricating oil to cool and lubricate compressor components, while oilless air compressors do not use lubricating oil. This is the most essential difference between the two.
A. High noise B. Low noise C. High power D. Low power answer: B. low noise
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…
A. Noise is loud B. Low efficiency C. Maintaining complex D. Low noise and high efficiency Answer: D. Low noise and high efficiency
Answer: The motor power varies depending on the compressor model and flow demand, with specifications such as 5.5kW, 7.5kW, 11kW, etc.
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