第48期 海船船员适任考试 《轮机英语》试题.doc

中华人民共和国海事局 2009年第5期海船船员适任统考试题（总第48期） 科目：轮机英语 试卷代号：805 适用对象：无限近洋航区3000kw及以上船舶二/三管轮 （本试卷卷面总分100分，及格分为70分，考试时间100分钟） 答题说明：请选择一个最合适的答案，并将该答案按答题卡要求。在其相应位置上用2B铅笔涂黑。第1题至88题，每题1分，第89题至96题，每题1.5分。 一、单项选择题 1. Diesel engines classified as reciprocating internal combustion engines because they____ A. use energy from fuel burned outside their cylinders B. burn fuel in a combustion chamber that moves back and forth C. burn fuel in a chamber where its energy moves a piston up and down D. a continuous combustion process to impart rotary motion to the pistons 2. The abbreviation 揗IP?stands for _____ A. middle indication pressure B. mean indicated pressure C. mean indicated pitch D. middle indicated power 3. The term used to express the ignition quality of a particular fuel is _____ A. cetane number B. octane number C. ignition index number D. volatility point 4. The period when both inlet valves and exhaust valves are open is referred to as____ A. valve loop B. valve uniflow C. valve overlap D. valve grinding 5. Which of the following statements represents the function of the compression rings installed at the top of a diesel engine piston? A. Control the amount of lube oil burned in the combustion chamber B. Transmit heat from the piston to the cylinder liner C. Prevent damage to ring groove inserts by action as a heat dam. D. Dissipate combustion chamber gas pressure by channeling it through the ring gap. 6. The gas loads on the engine structure are constrained by means of hydraulically preloaded_____ Which connect the bed plate, frame sections and cylinder jackets into a single unit. A. connecting rods B. mean bearing C. column D. the rods 7. ______of different thickness are inserted between the shells to enable adjustment of the bearing clearness. A. Screws B. Films C. Dises D. Shims 8. Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvan