A. Lubricating oil and oil filter needs to be replaced regularly
B. Short equipment life
C. high energy consumption
D. Compressed air has high oil content
Answer: A
Analysis: Oil injection air compressors require regular replacement of lubricants and oil filters, which increases maintenance costs.
Answer: It is designed to be energy-efficient and environmentally friendly, with low energy consumption and zero emissions.
Answer: It should be installed in a cool, dry place with adequate ventilation and away from sources of heat and moisture.
A. Oil coking B. Dust accumulation C. Insufficient pressure D. Answer: A Analysis: Coking oil will block the optical path system of the laser welding machine, resulting in a single maintenance cost exceeding 500,000 yuan.
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. 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