A.±0.5%
B.±1.5%
C.±2.5%
D.±5%
Answer: B
parsing: The accuracy of a flowmeter complying with GB/T 13466 standard is ±1.5%.
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
Answer: The compressor uses water instead of oil to lubricate the screw elements, eliminating the risk of oil contamination in the compressed air.
Answer: Follow the manufacturer’s instructions for safe shutdown procedures to avoid damage to the compressor.
A. Dust content B. Oil content C. Dew point temperature D. Pressure fluctuations Answer: B Analysis: Oil mist emissions violate environmental regulations, and environmentally friendly oil-free air compressors combined with environmental management system certification can ensure compliance.
A. General Certification B. Medical certification C. Industrial certification D. No certification required answer: B. Medical certification