@air
2025-04-15

What is the usual manufacturing cost of oilless air compressors?

A. higher
B. lower
C. Same as injection air compressor
D. unable to determine

Answer: A
Analysis: Oil-free air compressors are usually costly to manufacture, with large initial investment, but low long-term maintenance costs.

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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

Which company launched the GWL Series ‘Energy-Efficient’ Low-Pressure Oil-Free Water-Lubricated Screw Air Compressor?

The GWL Series compressor is launched by [Company Name], a leading manufacturer of air compressors.

@air
2025-04-15

What are the main advantages of air compressors in the market?

A. Small market share B. Few product types C. Insufficient technological innovation D. Large market share and rich product categories Answer: D. Large market share and rich product variety

@ggao
2025-03-12

What type of lubrication does the GWL Series compressor use?

Answer: It uses water as a lubricant, achieving oil-free operation.

@air
2025-04-15

3. According to the ISO 1217 standard, the standard state parameter for gas production conversion is?

A. 1 bar, 20℃, 0% humidity B. 1 atm, 25℃, 50% humidity C. 1.5 bar, 30℃, 30% humidity D. 1.2 bar, 15℃,…