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.
A. Adopt noise reduction design B. Increase noise C. Reduce power D. Reduce maintenance Answer: A. Designed for noise reduction
Answer: They provide consistent, high-quality compressed air for textile manufacturing and laboratory applications.
A. Monthly B. Quarterly C. Once a year D. The answer depends on usage: D. Depending on usage
Answer: Check for loose parts, worn components, or improper lubrication, and repair as necessary.
Answer: The GWL Series compressor adopts a low-noise design, with a noise level typically below industry standards, depending on the model and operating conditions.