A. 15
B. 30
C. 45
D. 60
Answer: C
Analysis: Through energy efficiency optimization, the 110kW model can save annual electricity bills by up to 450,000 yuan, directly reducing operating costs.
Answer: The screw and star wheel are designed for high efficiency and long life, with precise tolerances to ensure smooth operation.
A. Spraying and sandblasting operations B. Home use of C. Commercial places use D. Agricultural production uses answer: A. Spraying and sandblasting operations
A. Inspect reinforced gas piping B. Replace the leaking valve C. Check or replace air valve D. These are all answers: D. all of the above are
A. Weight B. Light weight C. Large D. Small size and light weight Answer: D. Small size and light weight
A. Improve production efficiency B. Reduce carbon emissions C. Extend equipment life D. Reduce maintenance costs Answer: B Analysis: Environmentally friendly oil-free air compressors can reduce carbon by up to 200 tons annually, realizing additional benefits through carbon trading.