Answer: Perform a series of tests to check the discharge pressure, capacity, and energy efficiency, and compare the results with the manufacturer’s specifications.
A. Screw B. Piston C. Centrifugal wheel D. Scroll disk answer: B. piston
A. Price and brand B. Performance, price and brand C. Viscosity and quality of lubricating oil D. Production date and transportation method Answer: C. Viscosity and quality of lubricating oil
A. High noise B. Low noise C. High power D. Low power answer: B. low noise
Answer: It is more energy-efficient and has lower operating costs due to its oil-free design and advanced compression technology.
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