A. 0.1-0.3m³/min
B. 1-3m³/min
C. 5-10m³/min
D. 10-15m³/min
Answer: A
parsing: The sampling flow of monitoring equipment is usually 0.1-0.3m³/min.
A. Oil coking B. Dust accumulation C. Insufficient pressure D. Answer: A Analysis: Coking oil will block the optical path system of the laser welding machine, resulting in a single maintenance cost exceeding 500,000 yuan.
A. Water-cooled and air-cooled B. Oil cooled and air cooled C. Water cooling and oil cooling D. The answer cannot be determined: A Analysis: The cooling system of oil-injected air compressors usually includes two types: water-cooled and air-cooled, which are used to cool the compressor and compressed air…
A. Inspect reinforced gas piping B. Replace the leaking valve C. Check or replace air valve D. These are all answers: D. all of the above are
A. Monthly B. Quarterly C. Once a year D. The answer depends on usage: D. Depending on usage
A. 50% B. 60% C. 75% D. 80% answer: C analysis: Environmentally friendly oil-free air compressors reduce oil pollution, thereby reducing the frequency of filter replacement and optimizing maintenance costs.