A. Annex B
B. Annex C
C. Annex D
D. Annex E
Answer: C
parsing: Gas production standard corresponds to ISO 1217 Annex D.
A. 0.05 bar B. 0.1 bar C. 0.2 bar D. 0.5 Bar Answer: B Analysis: The pressure drop per 50 meters of pipeline increases by 0.1 bar, and the flow loss is about 2%.
A. 15 B. 30 C. 45 D. 60 Answer: C Analysis: Through energy efficiency optimization, the 110kW model can save annual electricity bills of up to 450,000 yuan, directly reducing operating costs.
Answer: The noise level is relatively low, typically below [Z] dB(A).
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…
A. ISO 50001 B. Germany Tüv “0” level oil-free certification C. CE certification D. IATF 16949 Answer: B Analysis: Germany’s Tüv “0” level oil-free certification is specially used for testing…