簡介
《輪機英語考證學習指南》內容簡介本書是根據《海員培訓、發證和值班標準國際公約》、《中華人民共和國海事局2006年海船船員適任考試和評估大綱》要求編寫的。
本書是專為輪機英語考證和英語評估而作，完全是為廣大船員和航海院校在校生順利通過海船船員適任證書輪機英語考試和評估而編寫的。
全書分為兩部分：第一篇輪機英語考證指南，第二篇輪機英語評估指南。
輪機英語考證指南是根據最新版的輪機英語考證題目，按照新編的海船船員適任考試培訓教材《輪機英語》課文的內容編排相應的考證題，便於教學和同步學習訓練。每個題目都附有翻譯註釋；書中及軟體學習系統附有課文和考證題的部分生詞及短語，方便查閱。另外該篇還附有一部分關聯題及注釋。輪機英語評估指南按照新編《輪機英語聽力與會話》（第三版）中每一章的問答題和口述題編寫了參考答案，方便學生和船員的評估練習。
本書還配套了與機考界面完全一致的功能強大的智慧型化學習訓練軟體，針對性很強。本書及配套的學習訓練軟體完全按照考證和評估培訓的需要進行編寫，非常方便實用，真正做到：一冊在手，考證無憂！
目錄
本書部分目錄本書清樣
第一篇輪機英語考證指南
Unit 1
§ L1
0001. The auxiliary engine and a.c. generator can be connected with _____.
A. cam B. crosshead C. bulge D. coupling
註： 副機和發電機用聯軸節連線，故選D。
0002. The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of _____ rpm.
A. below 300 B. above 1200 C . between 300 to 1200 D. below 1200
註： 術語“中速機”是指運行速度介於300-1200 rpm之間的發動機。（也有說法為300-1000 rpm），只能選C，故選C。
0003. The rotating range of the low speed diesel engine is usually lower than _____.
A. 100 rpm B. 200 rpm C. 300 rpm D. 500 rpm
註： 術語“低速機”是指運行速度小於300rpm的發動機，故選C。
0004. Among the main propulsion units on board the ship with the same capacity, the lightest one is_____.
A. steam engine B. steam turbine C. gas turbine D. diesel engine
註： 船舶使用的各種類型的主推進裝置中，如果產生的功率相同，裝置重量最輕的是燃氣
輪機。（比功率大是燃氣輪機的優點，同樣功率，內燃機中重量最輕，體積也最小。）故選C。
0005. Concerning diesel propelled vessels, the astern power is to provide for continuous operation astern _____.
A. equal to that available for ahead operation
B. at 70 percent of the ahead rpm at rated speed
C. while underway and under all normal conditions
D. at 70 percent of the ahead rpm of average continuous sea speed
註： 柴油機驅動的船舶，倒車轉速一般是正車額定轉速的70％～80％，故選B。
0006. A diesel engine is operating at 1800 RPM and driving a propeller at 600 RPM. What is the speed reduction ratio?
A. 0.30 to 1 B. 3.00 to 1 C . 3.33 to 1 D. 33.0 to 1
註： 減速齒輪箱的減速比=曲軸轉速／螺旋槳轉速=1800／600=3，故選B。
0007. Engine displacement is equal to the cylinder _____.
A. area times the stroke B. area times the stroke, times the number of cylinders
C. volume times the stroke D. volume times the stroke, times the number of cylinders
註： 發動機的排量=氣缸面積×活塞衝程×氣缸數目，選B。
0008. In using reduction gears to obtain efficient propeller speeds, _____.
A. they must be located at the after end of the engine
B. they can only be used with one engine at a time
C. they eliminate the need for controllable pitch propellers
D. they are connected to the engine with a flexible coupling
註： 減速齒輪與發動機採用柔性聯軸節連線，選D。
0009. Maximum horsepower of a diesel engine is attained _____.
A. when the engine RPM is pulled down by overload
B. at rated engine RPM
C. at 95 % of rated engine RPM
D. at 95 % of a properly adjusted governor RPM with the engine under full load
註： 柴油機的最大功率是在其額定轉速時產生的，故選B。
0010*. The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.
A. stopping B. being stopped
C. to stop D. to be stopped
註： 術語“中等速度”以前被解釋為能使船舶在視野的一半距離內被停住的速度。根據題意船舶被停住要使用被動語態，enable後面要跟動詞不定式，故選D。
0011. _____ can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.
A. The medium speed 4-stroke trunk piston engine
B. The low speed 2-stroke crosshead engine
C. The medium speed 2-stroke crosshead engine
D. The low speed 4-stroke trunk piston engine
註： 即使主機或者是汽輪機，或者是二衝程十字頭柴油機，在中到大型的商船上也有採用中速的四衝程筒狀柴油機。B中的二衝程機題目中已有，C中的中速二衝程機和D中的低速四衝程機都不對，只有A的中速四衝程機符合題意。故選A。
0012. _____ allows the engine to be placed wherever is most suitable, as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations.
A. Diesel engine propulsion B. Diesel electric propulsion
C. Steam engine propulsion D. Gas turbine propulsion
註： 柴油電力推進可以使主機布置在最合適的位置，而不用像傳統的推進裝置要求與減速齒輪和軸系對中。根據題意選B。Diesel electric propulsion指柴油電力推進。
0013. Medium speed engines have a _____ power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have _____ maintenance intervals.
A. higher/reducedB. higher/increased
C. lower/reduced D. lower/increased
註： 中速機比低速二衝程機的功率重量大，但由於速度高，檢修周期較短。故選A。
0014. The diesel engine is similar to the gasoline engine in that ______.
A. both of them are ignited by compressed air
B. both of them are the forms of external combustion engines
C. both of them have spark plugs
D. the power is developed by the piston in the cylinder
註： 柴油機類似汽油機在於功率都是由氣缸里的活塞產生的。故選D。
0015. The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is ______.
A. they operate between 150 and 450 rpm
B. they are connected to the propeller by gearing
C. their smaller size and weight
D. they can be connected directly to the propeller without gearing
註： 越來越多的大型商船以中速柴油機為動力的原因是它們的尺寸小、重量輕。故選C。
