Answer: The compressor uses water instead of oil to lubricate the screw elements, eliminating the risk of oil contamination in the compressed air.
Answer: It can be determined by observing the pressure differential indicator of the water filter or based on usage time and water quality.
A.≤0℃ B.≤-10℃ C.≤-20℃ D.≤-30℃ Answer: C Analysis: The spraying process requires a compressed air dew point of ≤-20℃ (PDP) to prevent moisture condensation from affecting the coating quality.
A. Low pressure air compressor, medium pressure air compressor, high pressure air compressor B. Micro air compressor, small air compressor, medium air compressor C. Silent air compressor, portable air compressor, medical air compressor D. Piston air compressor, screw air compressor…
A. 5% B. 11% C. 20% D. 30% answer: B Analysis: For every 1000 meters increase in altitude, the air density drops by about 11%.
A. Backwardness of energy-saving technology B. Advanced energy-saving technology C. Don’t pay attention to energy-saving technologies D. General answer to energy-saving technology: B. Advanced energy-saving technology