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.
Answer: It is mainly used in medical, food, electronics, chemical, textile, and other industries where high air quality is required.
A. Theoretical value of exhaust volume B. Actual gas production demand C. Equipment appearance size D. Brand market ranking answer: B Analysis: Selection should take actual gas production demand as the core parameter.
A. Convert the gas production at different temperatures to standard state B. Calculate the theoretical air compressor displacement C. Evaluate brand market share D. Predicting equipment failure rate Answer: A Analysis: Temperature correction factor is used to unify different temperatures…
A.±0.5% B.±1.5% C.±2.5% D.± 5% Answer: B Analysis: The accuracy of flow meters complying with GB/T 13466 standard is ± 1.5%.
A. Home use B. Commercial places use C. D. Agricultural production use answer: C. Industrial use