轮机英语 17关联题

轮机英语题库关联题17关联题题 Passage 1 The Sulzer multi-level accumulator system for cylinder lubrication has proved particularly beneficial to good piston-running behaviour. The cylinder oil is fed to the liner suface at two levels of quills. This lubricating oil and is therefore considered to be efficient and economical. The lubrication oil pumps are driven by a frequency-controlled electric motor and the oil is distributed to the quill accumulators by oil distributors. With this solution, much less piping is required. The cylinder oil feed rate is controlled according to the engine load. Adjustments depending on the engine condition and for running-in can be easily made by using software in the engine control system 1. What is the main idea of this passage? A. The lubrication system of main engine B. How to control the lubrication C. The cylinder lubrication of main engine D. How to make running-in easier 2. How many tiers of cylinder oil quills A. one B. two C. three D. four 3. How is the cylinder oil feed rate controlled? A. according to the engine speed B. according to the engine load C. according to both the engine speed and load D. not mentioned in this paragraph 4. How are the lubrication oil pumps driven? A. by camshaft B. by hydraulic motor C. by pneumatic motor D. by electric motor 关联题(原题库上的)