口试题卡一

Section A. Directions: Read a passage as correctly and fluently as you can. (20%，共20分)

      Oily water separators are used to separate oil from bilge water before the latter is pumped overboard. On the tank top of the engine room, we can very often find water. The water usually comes from the pump and valve packing glands, leaks, spills, washing water, air reservoir drains, and many other sources. Over a period of time, water accumulates as bilge water. The oily water separator works on the principle of coalescing small oil droplets in the water to form larger oil drops. When the oil drops become large enough, the lower density oil drops floats up and collects at the top of the vessel. The water remains at the lower portion and is pumped overboard.

Section B. Directions: Answer four questions. (20% 每题5分) 

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Section C. Directions: Present your ideas about a topic. (10% 共10分)

The engine room.

The engine room is the heart of a ship. It is generally located at the stern near the ship bottom. In the engine room, there are a lot of machinery and systems, such as the main engine, the generator engine, boilers, pumps, the refrigerating system, and the air conditioning system. The main engine, also called the main propulsion plant，is the largest and most important one . The modern improvement of control systems results in machinery space remaining unattended for long periods. That is UMS.