@air
2025-04-15
When can the history of air compressors go back?
- A. in 1873
- B. in 1871
- C. in 1965
- D. in 2017
Answer: A. in 1873
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@air
2025-04-15
2. Which of the following does not include the core influencing factors of gas production?
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.
@ggao
2025-03-12
What are the energy conservation and environmental protection performance of the GWL Series compressor?
Answer: It is designed to be energy-efficient and environmentally friendly, with low energy consumption and zero emissions.
@air
2025-04-15
What is the main purpose of the water-lubricated design of oilless air compressors?
A. Improve the purity of compressed air B. Reduce equipment noise C. Cooling and lubricating parts D. Increase equipment life Answer: C Analysis: The water-lubricated design of oil-free air compressors is mainly used to cool and lubricate compressor components to ensure…
@ggao
2025-03-12
What is the discharge capacity range of this series of compressors?
Answer: The discharge capacity ranges from [A] to [B] m³/min.
@air
2025-04-15
What are the main advantages of centrifugal air compressors?
A. Large flow and high power are conducive to energy conservation B. Compact structure and good sealing effect C. Smooth operation and reliable operation D. These are all answers: D. all of the above are