第38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 2005年第3期海船船员适任证书全国统考试题(总第38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，考试时间为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74题，每题1分，第75题至78题，每题1.5分,第79题至80题, 每题10分。 单项选择题： Bedplates are the ______of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost. A. hull B. projection C. graphitication D. foundation Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine? A. Exhaust and scavenging. B. Scavenging and compression. C. Ignition and expansion. D. Exhaust and compression. Which of the following may lead to the engine NOT to start on air? A. starting air pressure too high. B. correct timing of starting air valves. C. three of the six starting valves stuck.. D. the turning gear disengaged. The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called ______.A. explosive range B. flash point C. ignition temperature D. combustion temperature The function of a lubricating oil is ______to lubricate the running surface ______to carry away a great deal of heat. A. not/but B. neither/nor C. either/or D. not only/but also The degree to which the viscosity of an oil will change with a change in temperature is indicated by the ______.A. weight designation B. viscosity index C. pour point D. thermal change value All three systems have the ports____to swirl the incoming air and direct it in the appropriate path. A. angled B. rounded C. being angled D. being rounded Scavenging in a four-stroke/cycle diesel engine occurs during the ______.A. last part of the exhaust stroke, and the first part of the intake stroke B. last part of the intake stroke only C. early part of the injection stroke only D. early pa