三、請列出三種最常見之油中雜質的去除方式，並詳細說明其淨化原理。 （20 分）

一、請問如何定義水管式鍋爐（water tube boiler）與火管式鍋爐（fire tube boiler）？何者適用於高壓力蒸汽？何者之效率較高？並試繪圖說明一水 管式鍋爐之工作原理。（20 分）

二、請詳述板式熱交換器的構造原理及其九項優點。（20 分）

四、何謂甲板機械（Deck machinery）？請列舉出至少八項甲板機械。 （20 分）

五、請將下列英文譯成中文。（20 分） The expansion valve is the regular through which the refrigerant passes from the high pressure side of the system to the low pressure side. The pressure drop causes the evaporating temperature of the refrigerant to fall below that of the evaporator. Thus, for example, the refrigerant can be boiled off by an evaporator temperature of -18 ℃ because the pressure drop brings the evaporating temperature of the refrigerant down to say -24℃.

五、請將下列英文翻譯成中文。 （20 分）The Port State Control Officer (PSCO) ensures compliance with Annex I of MARPOL 73/78 by assessing oil residues, sludge and bilge water holding tanks, and the efficiency of the oily water separator. The PSCO reviews the Oil Record Book to verify proper disposal and usage of reception facilities, noting any inadequacies. Ships must maintain improved sludge systems to store and dispose of oil residues in line with international standards. The PSCO checks the effectiveness of onboard oil filtering systems and related equipment for compliance. The inspection now includes automated monitoring systems to track oil discharges and sludge processing in real time. By enforcing these regulations, authorities aim to protect marine ecosystems and promote sustainable maritime operations.

四、以主機缸套冷卻水作為加熱海水淡化裝置的工作流體，請詳述在啟動和停用時，主機工作系統應特別注意那些問題？（20 分）

三、請詳述造成空氣壓縮機（Air Compressor）的出口排氣溫度過高的原因為 何？（20 分）

二、船用泵（Pump）是屬於流體機械（Fluid Machinery）的一種，其中離心泵 （Centrifugal Pump）廣泛使用於輪船機艙中，請以流量（Flow Rate）與揚程（Head）試述離心泵的結構種類和適用的工作場域。（20 分）

一、伯努利方程式（Bernoulli’s Equation, BE）與雷諾數（Reynolds Number, Re） 為兩個應用流體力學的重要內容，請分別詳述 Re 所代表的物理意義和 BE 的基本原理並分析討論其流體流動時兩者之間的關聯性。 （20 分）

五、請將下列專業英文翻譯成中文。（20 分）Controllable pitch propellers are normally fitted to a flanged tail shaft as the operating mechanism is housed in the propeller boss. As its name implies, it is possible to alter the pitch of this type of propeller to change ship speed or to adjust to the prevailing resistance conditions. This change in pitch is effected by rotating the blades about their vertical axes, either by hydraulic or mechanical means. A shaft generator can be driven at constant speed while allowing at the same time a change of ship’s speed through the propeller. Since it is normally possible to reverse the pitch completely, this type of propeller is used with a unidirectional engine to give full ahead or astern thrust, when maneuvering.

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