What are the compression elements of piston air compressors?
- A. screw
- B. piston
- C. centrifugal wheel
- D. scroll
- Answer: B. piston
Answer: It should be installed in a cool, dry place with adequate ventilation and away from sources of heat and moisture.
A. Backwardness of energy-saving technology B. Advanced energy-saving technology C. Don’t pay attention to energy-saving technologies D. General answer to energy-saving technology: B. Advanced energy-saving technology
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
A. General Standard B. Medical Standard C. Industry Standard D. No standard answer required: B. medical standard
A. 10-20 B. 20-30 C. 30-40 D. 40-50 Answer: C Analysis: The average annual maintenance cost of environmentally friendly oil-free air compressors is 200,000 – 300,000 yuan, which is 30-40 less than traditional models…