Answer: The main features include energy efficiency, low pressure operation, oil-free water lubrication, and high reliability.
A. 1873 B. 1871 C. 1965 D. Answer in 2017: A. in 1873
Answer: The motor power varies depending on the compressor model and flow demand, with specifications such as 5.5kW, 7.5kW, 11kW, etc.
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. 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