A. 5-7 years
B. 7-10 years
C. 10-12 years
D. 12-15 years
Answer: C
Analysis: Environmentally friendly oil-free air compressors adopt a fully enclosed design and have an equipment life of 10-12 years, far exceeding traditional oil-lubricated models.
A. Weight B. Light weight C. Large D. Small size and light weight Answer: D. Small size and light weight
Answer: It uses water as a lubricant, achieving oil-free operation.
A. Lower cost B. Simple maintenance C. Compressed air pure D. Wide application range Answer: C analysis: The advantages of oil-injected air compressors include low cost, simple maintenance and wide application range, but the compressed air has a high oil content…
What aspect of the company does ISO 50001 certification focus on? A. Quality management system B. Environmental Management System C. Energy Management System D. Occupational health and safety management system answer: C analysis: ISO…
A. Food and beverage, pharmaceuticals, cigarettes, electricity, heavy industry, chemical fiber, manufacturing, automobiles, etc. B. Household use, commercial use, agricultural production use C. Oil and gas, construction, logistics, medical D. Manufacturing, oil…