大管轮轮机英语综合(33-48期)(3)

D. the CO 2 gas is lighter than air and a large amount is required to extinguish a fire near the deck 67．The company should establish procedures to ensure that the ship is maintained______ the

provisions of the relevant rules and regulations.

A. out of accordance with B. in relation to C. in conformity with D. in connection with 68．The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than ______

by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage ______before their watch.

A. 0.08%/ 4 hours B. 0.08%/ 2 hours C. 0.04%/ 4 hours D. 0.04%/ 2 hours

二、关联题（每组关联题题干下有4个小题，每小题4个选项） 第一组：

Because the exhaust gas driven turbo-blower cannot provide enough air at low engine speeds, the pressurized air should be cooled to increase the charge air density. As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engine. So a water separator should be mounted beneath the bottom part of the engine inlet manifold.

Lubricating oil from the compressor will pass along the air lines and deposit on them, in the event of a cylinder air starting valve leaking, hot gases would pass into the air pipes and ignite the lubricating oil. If starting air were supplied to the engine, this would further feed the fire and could lead to an explosion in the pipelines. In order to prevent such an occurrence, cylinder-starting valves should be properly maintained and the pipelines regularly drained. Also oil discharged from compressors should be kept to a minimum, by careful maintenance. 69. A water separator is used in order to ______.

A. keep the air from being carried into the engine B. keep the moisture from being condensed

C. keep the danger from being carried into the engine D. take away the condensate from the air 70. Why should we use a charge air cooler?

A. In order to increase the charge air temperature. B. In order to increase the charge air pressure.

大管轮轮机英语综合

C. In order to reduce moisture condensed. D. In order to increase the charge air density.

71. Which of the following may cause an explosion according to the passage?

A. Starting air cannot be supplied into the engine.

B. Air starting valve leaks and starting air is supplied into the engine. C. Cylinder-starting valves are properly maintained.

D. Oil discharged from compressors is kept to a minimum.

72. In order to avoid igniting the lubricating oil and leading to an explosion in the pipelines, ______.

A. pipelines should be regularly drained

B. cylinder-starting valves should be properly maintained

C. oil discharged from compressors should be kept to a minimum D. A+B+C

第二组：Maintenance and Overhauling

Satisfactory and proper operation of the engine depends not only on correct manoeuvring but also on how well it is kept in order. Regular maintenance of the engine helps a lot in preventing early wear of parts and in ensuring a long service as well as the working efficiency of the engine. With various types of engines, of course, the maintenance and overhaul is different. Instruction books are to be referred to whenever necessary.

The individual parts of the engine should be inspected and thoroughly cleaned at regular intervals. The periods for such overhaul work depend largely on the quality of the lubricating oil and fuel, on the load and on the efficiency of the operator in locating troubles and remedying them in time..

During overhaul the safety rules have to be observed as required in order to prevent the danger of accidents. Special precaution is necessary when the engine is running with the lagging removed. During overhauls with the engine shut down, safety measures should be taken to avoid undesirable turning of the crankshaft. All pipes should be pressure-relieved before the repair work is started. Read the pressure gauges and /or check the pipes by carefully loosening the screw plugs or connections.

If some parts of the running gear are dismantled, before using the turning gear, make sure that no loose parts are jammed in the crankcase where it is easy for them to cause damage. 73. According to the passage, which the following factors are involved to keep the engine

satisfactory and proper running?

A. correct manoeuvring B. keep the engine in order C. refer to the instruction books D. all of above

74. According to the passage, which the following items do influence the periods of the overhauling

work?

A. the quality of the lubricating oil B. the load of the engine

C. the efficiency of the operator in locating troubles and remedying them in time D. all of the above

75. According to the passage, we should take special precaution when ____.

A. the engine is running with the removal of lagging B. the engine is shut down

C. pipes are removed D. the screw plugs or connections are lossened 76. According to the passage, line 17 the bold and italic word “it” may propabably mean ____ .

A. running gear B. turning gear C. crankcase D. to cause damage

中华人民共和国海事局

2003年第3期海船船员适任证书全国统考试题(总第32期)

科目：轮机英语 试卷代号：803

适用对象：无限、近洋航区3000KW及以上船舶大管轮

（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68题，每题1分，第69题至76题，每题1.5分,第77题至78题, 每题10分。

一、单项选择题：

69．The rate of pressure rise during the period following fuel igniti …… 此处隐藏：5313字，全部文档内容请下载后查看。喜欢就下载吧 ……