一、推進器的損傷可能有那些情況？試簡述其原因。（20 分）

五、請將下列英文譯成中文。（10 分） During operation, the diesel engine runs at a high speed. Also, some parts of the engine are hot, and the compressed air and such pressurized fluids as oil and water are flowing inside it. Therefore, thoroughly read the safety precautions before operation, maintenance and inspection to handle the engine properly not to cause any accidents.