Daily Question (November 28)
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This post was last edited by yanran88 on 2010-11-28 at 10:26. Daily Question (November 28th); please hide your answers! 1. When the sulfur content in ordinary raw materials is greater than ﹙ ﹚, it is not necessary to add sulfur to the raw materials. A. 40ppm B. 50ppm C. 100ppm D. 150ppm 2. The requirement for SiO2 in the steam for the turbine of the pyrolysis gas compressor is less than ( ) ppm. A. 0.5 B. 0.2 C. 0.05 D. 0.023. 1 ppm is equivalent to ﹙ ﹚%? A.10-5 B.10-4 C.10-3 D.10-64. The amount of flushing oil in stages 1 to 5 of the pyrolysis gas compressor gradually ( ). A. Increase B. Decrease C. Remain unchanged D. Increase first then decrease. 5. In an ethylene refrigeration system, each user of the ethylene refrigerant operates based on the ( ) principle, and returns the ethylene gas-liquid mixture to their respective ( ). A. Convection…suction tank B. Thermosiphon…suction tank C. Radiation…suction tank D. Heat conduction…suction tank
1. When the sulfur content in the general raw material is greater than C.100 ppm, it is not necessary to add sulfur to the raw material. 2. The requirement for SiO2 in steam for the turbine of the pyrolysis gas compressor is less than (A. 0.5) ppm. 3. 1 ppm is equivalent to ﹙C.10-3﹚%. 4. The flushing oil volume for stages 1 to 5 of the pyrolysis gas compressor gradually (A. increases). 5. In the ethylene refrigeration system, each user of the ethylene refrigerant operates based on the (A. convection…suction tank) principle, and returns the ethylene gas-liquid mixture to their respective ( ).
My answer is CBDDB. I’m not sure how many questions I got right; could the original poster provide the correct answers? Hehe.
I work in this field, but to admit that I don’t know something is embarrassing; I really need to learn it...
1.B 2.A 3.D 4.B 5.B
This post was last edited by Kikyo on 2010-11-29 16:24. The answer is CDBBA