A. 100
B. 300
C. 500
D. 800
Answer: D
Analysis: Coating defects caused by oil pollution can cause annual losses of more than 8 million yuan for a single production line, highlighting the importance of oil-free air compressors.
A. 15 B. 30 C. 45 D. 60 Answer: C Analysis: Through energy efficiency optimization, the 110kW model can save annual electricity bills of up to 450,000 yuan, directly reducing operating costs.
Answer: Follow the manufacturer’s instructions for safe shutdown procedures to avoid damage to the compressor.
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%.
A. General Certification B. Medical certification C. Industrial certification D. No certification required answer: B. Medical certification
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.