A. Annex A
B. Annex C
C. Annex D
D. Annex E
Answer: B
parsing: The exhaust volume standard corresponds to ISO 1217 Annex C.
Answer: It uses water as a lubricant, achieving oil-free operation.
A. 50% B. 60% C. 75% D. 80% answer: C analysis: Environmentally friendly oil-free air compressors reduce oil pollution, thereby reducing the frequency of filter replacement and optimizing maintenance costs.
A. 1-3% B. 8-12% C. 15-25% D. 30-40% Answer: C Analysis: The clearance volume of reciprocating air compressor causes a 15-25% efficiency decrease.
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…
Answer: Ensure the installation site is clean, dry, and well-ventilated, and check the power supply and piping connections.