A. higher
B. lower
C. Same as injection air compressor
D. unable to determine
Answer: A
Analysis: Oil-free air compressors are usually costly to manufacture, with large initial investment, but low long-term maintenance costs.
Answer: It can monitor parameters such as discharge pressure, temperature, motor current, and lubrication water level.
Answer: The GWL Series compressor is produced by Shanghai Gran克林 Group (assuming “Gran克林” is a placeholder for the actual company name, which should be replaced with the correct name if known).
Answer: It can handle corrosive gases and provide reliable performance in harsh environments.
Answer: The competitive advantages include high energy efficiency, no oil contamination, low maintenance costs, long service life, as well as strong brand influence and technical support.
A. 0.05 bar B. 0.1 bar C. 0.2 bar D. 0.5 Bar Answer: B Analysis: The pressure drop per 50 meters of pipeline increases by 0.1 bar, and the flow loss is about 2%.