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. 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: The motor power typically ranges from [C] to [D] kW.
A. Oil injection air compressor B. Oil-free air compressor C. Both can be D. The answer cannot be determined: B Analysis: The semiconductor manufacturing industry has extremely high requirements for the purity of compressed air, so oil-free air compressors are usually chosen.
A. Price and brand B. Performance, price and brand C. Input power and output power D. Production date and transportation method Answer: C. input power and output power