【Test you】Basic knowledge of chemical engineering (33)
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It is convenient for others. Please write the answer directly. Do not paste the original question, otherwise you will not be graded. Thank you for your cooperation! Single or multiple choice 1. Heat transfer rate compared with heat load, heat transfer rate__ _ _ _ _ _ _ heat load. A. Equal to B. Less than C. Greater than or equal to D. Greater than 2. How to judge the amount of sewage discharge when the sewage discharge meter is broken?__ _ _ _ _ _ _ . A. Experience B. No sewage discharge C. Similar to the amount of supplementary water D. Unable to judge 3. Chemical industry water mainly includes four categories, among which the largest water consumption is__ _ _ _ _ . A. Boiler water B. Process water C. Cleaning water D. Cooling water 4. Continuous distillation When the steam-liquid mixed feed is fed, its temperature__ _ _ _ _ _ _ _ _ _ Bubble point temperature. A. Less than B. Equal to C. Greater than D. Less than or equal to 5. The starting current of the three-phase asynchronous motor is its rated current.__ _ _ _ _ _ _ times. A.2—3 B.4—7 C.8—10 D.10—12 6.__ _ _ _ _ _ _ It usually refers to the percentage of the amount of a certain material obtained after multiple steps of treatment (physical or chemical) to the amount before treatment. A. Conversion rate B. Yield C. Productivity D. Recovery rate 7. The relationship between the melt index and molecular weight of high molecular polymers is__ _ _ _ _ _ . A. Low melt index, high molecular weight B. Low melt index, low molecular weight C. High melt index, low molecular weight D. High melt index, high molecular weight 8. The production capacity of the extruder is related to__ _ _ _ _ _ related. A. Screw diameter B. Screw length C. Screw speed D. Screw length-to-diameter ratio 9. In polymerization production, it is often necessary to control the performance of polymer products through the MI value, which represents__ _ _ _ _ _ _ . A. Melt index B. Melt viscosity C. Molecular weight distribution D. Conversion rate 10/liquid viscosity increases, increasing the pump flow rate__ . A. Increase B. Decrease C. No change D. Fluctuate Reference answer: 1C2C3D4C5B6B7AC8AC9A10B This post was last edited by zhangyong6404 on 2009-4-16 13:30 ]
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1 C 2B 3 D 4 C 5 A 6 B 7B 8 C 9 C 10 B This post was last edited by 565394146 on 2009-4-15 19:35 ]
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1. The heat transfer rate is compared with the heat load. The heat transfer rate__ _ _ _ _ _ _ heat load. C, [2W * k) T5 r8 {" |8 wA. Equal to B. Less than C. Greater than or equal to D. Greater than $ d) t" o- J. c8 M2. How to judge the amount of sewage discharge when the sewage discharge meter is broken__ _ _ _ _ _ _ . A * h2 m8 I7 \0 S2 k5 i6 EA. Experience B. No sewage discharge C. Similar to the amount of supplementary water D. Unable to judge $ W0 ^ Z) O% N' B' K: p5 {/ x 3. Chemical industrial water mainly includes four categories, among which the largest water consumption is__ _ _ _ _ . D 6 k' P2 c! `; D6 c. hA. Boiler water B. Process water C. Cleaning water D. Cooling water" X, x( P- w6 @8 a" n6 l0 |( I6 @; A 4. In continuous distillation, when the vapor-liquid mixed feed is fed, the temperature__ _ _ _ C__ _ _ _ _ Bubble point temperature. s' F- D- * q: L A. Less than B. Equal to C. Greater than D. Less than or equal to; V3 T5 k' L4 A 5. The starting current of the three-phase asynchronous motor is its rated current__ _ _ A__ _ _ times. ' U4 d" @$ `4 |5 vA.2—3 B.4—7 C.8—10 D.10—12 3 t: S; T! F0 R) e( V" w: q& _- l;j6、__ _ _ B__ _ _ It usually refers to the percentage of the amount of a certain material obtained after multiple steps of treatment (physical or chemical) to the amount before treatment. 0 c% x: S * j8 e! x1 v! }A. Conversion rate B. Yield C. Yield D. Recovery rate (?% x( t: x l0 W#__ _ D__ _ _ . 6 D6 Q1 D4 [* yA. Low melt index, high molecular weight B. Low melt index, low molecular weight; s/ {0 i, J5 e2 O5 t * f( w) g7 M C. High melt index, low molecular weight D. High melt index, high molecular weight - f( v; i0 t% g6 }" j 8. The production capacity of the extruder is related to__ _ C__ _ _ related. + ~8i- _9 F3 A A. Screw diameter B. Screw length C. Screw speed D. Screw aspect ratio 4 v- Y2 C n$ o" m: s1 g s+ y4 ` 9. In polymerization production, it is often necessary to control the performance of polymer products through the MI value, which represents__ _ _ C__ _ _ . - z5 C P& P6 P A. Melt index B. Melt viscosity C. Molecular weight distribution D. Conversion rate) s * @ F. R-\7 P2 R. J10/The viscosity of the liquid increases, which increases the flow rate of the pump._B_. % y/ ?! V: i3 l+ W A. Increase B. Decrease C. No change D. Fluctuate * H0 P c0 }! V1 w. V+ M
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