A. 1 bar, 20℃, 0% humidity
B. 1 atm, 25℃, 50% humidity
C. 1.5 bar, 30℃, 30% humidity
D. 1.2 bar, 15℃, 20% humidity
Answer: A
parsing: ISO 1217 specifies the standard state as 1 bar, 20℃, 0% humidity.
A. Small flow B. Low power C. Not suitable for occasions with small gas volume and too high pressure ratio D. Complex structure answer: C. Not suitable for occasions with small gas volume and too high pressure ratio
A. Semiconductor manufacturing B. Food production C. Construction D. Pharmaceutical industry answer: C analysis: Due to the high oil content of compressed air, oil-injected air compressors are usually used in occasions where the purity of compressed air is not high, such as construction…
Answer: Follow the manufacturer’s instructions for draining and refilling the water tank.
A. Cylinder volume × speed × number of cylinders B. Gas production × efficiency coefficient C. Theoretical exhaust volume ÷ temperature correction coefficient D. Standard state gas production × altitude correction factor Answer: A Analysis: Discharge…
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%.