A. Cooling and lubricating compressor components
B. Improve the purity of compressed air
C. Reduce equipment noise
D. Increase equipment life
Answer: A
Analysis: The lubricating oil system of the oil-injected air compressor cools and lubricates the compressor components by injecting lubricating oil into the compression chamber.
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: A. A few hundred yuan to several thousand yuan
A. An altitude of 1500 meters causes intake pressure loss B. After-treatment equipment pressure loss 6% C. The capacity of the air storage tank is too large D. The ambient temperature is too high Answer: C Analysis: Insufficient capacity of the gas storage tank is a problem. Too large will not affect the gas production…
Answer: The discharge pressure range is typically between [X] and [Y] bar.
A. 100 B. 300 C. 500 D. 800 Answer: D Analysis: Coating defects caused by oil pollution can cause annual losses of more than 8 million yuan for a single production line, highlighting the importance of oil-free air compressors.
A. 1873 B. 1871 C. 1965 D. Answer in 2017: A. in 1873