A. high cost
B. limited application
C. maintain complex
D. Compressed air has high oil content
Answer: D
Analysis: Disadvantages of oil-free air compressors include high cost and limited scope of application, but low maintenance costs, pure compressed air and no oil content.
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. Food and beverage, pharmaceuticals, medical B. Home use, commercial use C. Oil and gas, construction, logistics D. Manufacturing, oil and gas, construction Answer: A. Food and beverage, pharmaceuticals, medical
A. Nitrogen purge loss B. Brand premium cost C. Advertising intensity D. Equipment appearance aesthetics Answer: A Analysis: High-end industries need to consider nitrogen purging and monitoring sampling losses.
Answer: The discharge capacity ranges from [A] to [B] m³/min.
Answer: It consumes less energy and operates more efficiently, resulting in lower operating costs.