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. Low pressure air compressor, medium pressure air compressor, high pressure air compressor B. Micro air compressor, small air compressor, medium air compressor C. Silent air compressor, portable air compressor, medical air compressor D. Piston air compressor, screw air compressor…
A. Price and brand B. Performance, price and brand C. Viscosity and quality of lubricating oil D. Production date and transportation method Answer: C. Viscosity and quality of lubricating oil
A. An altitude of 1500 meters causes intake pressure loss B. After-treatment equipment pressure loss 6% C. The capacity of the air storage tank is too large D. The ambient temperature is too high Answer: C Analysis: Insufficient capacity of the gas storage tank is a problem. Too large will not affect the gas production…
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. Industry, energy, construction, mining B. Home use, commercial use C. Oil and gas, construction, logistics D. Manufacturing, oil and gas, construction Answer: A. Industry, energy, construction, mining