一、某船舶推進二行程柴油主機使用進氣口進氣以及單流掃氣，請繪製此類柴油機之典型 P（壓力）-V（體積）示功圖及氣閥定時圖，並於氣閥定時圖中標示掃氣（Scavenging）與過給（Supercharging）時期。（20 分）

五、請將下列英文翻譯成中文。（10 分） Marine engineers are responsible for the design of many ship systems that have the potential of causing a damaging effect upon the environment; therefore for such systems, the control of harmful pollutants, which could be discharged either into the air or water from marine vehicles, is a principal design consideration.