A.≤0℃
B.≤-10℃
C.≤-20℃
D.≤-30℃
Answer: C
Analysis: The spraying process requires compressed air dew point ≤-20℃ (PDP) to prevent moisture condensation from affecting the coating quality.
A. High energy consumption B. Low energy consumption and high efficiency C. Maintaining complex D. High noise answer: B. Low energy consumption and high efficiency
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. 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
Answer: Wear personal protective equipment, follow the startup procedures, and monitor the compressor for any abnormal behavior.
Answer: Water lubricates the screw elements, cools the compressor, and helps to maintain optimal operating conditions.