A. 1873 B. 1871 C. 1965 D. Answer in 2017: A. in 1873
Answer: Water lubricates the screw elements, cools the compressor, and helps to maintain optimal operating conditions.
Answer: The motor power typically ranges from [C] to [D] kW.
A. A few hundred yuan to several thousand yuan B. Thousands of yuan to tens of thousands of yuan C. Tens of thousands to hundreds of thousands of yuan D. Hundreds of thousands of yuan to several million yuan Answer: B. Thousands to tens of thousands of yuan
Answer: Regular replacement of water filters, air filters, and other consumables is required, as well as inspection of the cooling system, lubrication system, and other components.