A. 100
B. 300
C. 500
D. 800
Answer: D
Analysis: Coating defects caused by oil pollution can cause annual losses of more than 8 million yuan for a single production line, highlighting the importance of oil-free air compressors.
A. 1-2% B. 3-5% C. 6-8% D. 10-15% Answer: B Analysis: High humidity reduces effective air volume by 3-5%.
Answer: Ensure the installation site is clean, dry, and well-ventilated, and check the power supply and piping connections.
A. Oil injection air compressor B. Oil-free air compressor C. Both can be D. The answer cannot be determined: A Analysis: Oil injection air compressors have low initial investment and are suitable for companies with limited budgets.
Answer: It uses water as the lubricant, eliminating the need for oil and reducing the risk of contamination.
Answer: It includes regular inspections, changing the lubrication water, and cleaning the air filter.