[Oil Transport Quiz with Prizes] 99

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Multiple-choice questions. 5 questions per day; 2 wealth points for answering one question correctly, and an additional 10 wealth points if all questions are answered correctly. To prevent some members from copying other members’ answers, please hide your posts when answering questions. To hide the method, click here: Hide Method. Answer using the same IP; only the first post is valid. Also, be careful when posting – edits are invalid! 226. A swirl burner utilizes the high-speed rotation of ( ) to throw oil out under the action of centrifugal force, thereby forming an oil film, which is then atomized by the high-speed rotating airflow. (A) Impeller (B) Flywheel (C) Oil cup (D) Oil pan 227. The motor of the swirl cup burner drives the swirl cup and the fan impeller to rotate at a speed of ( ) r/min or higher through a belt drive. (A)1500 (B)3000 (C)4500 (D)6000 228. A swirler burner utilizes the high-speed rotation of an oil cup, which causes the oil to be thrown out due to centrifugal force, thereby forming ( ), and it is then atomized under the action of the high-speed rotating airflow. (A) Oil droplets (B) Oil mist (C) Oil flow (D) Oil film 229. Mechanical atomization burners rely on fuel oil under certain ( ) conditions to be atomized through the atomization plates in the nozzle. (A) Pressure (B) Flow rate (C) Temperature (D) Velocity 230. Mechanical atomization burners are also known as pressure atomization burners; under normal circumstances, the fuel oil pressure should not be lower than ( ) MPa. (A)0.1～0.3 (B)0.5—0.7 (C)1.0～1.2 (D)1.5-1.7 Answer key: 226.C 227.C 228.D 229.A 230.C