32. 商船上所用的穢水(Sewage)處理設備當中,安裝吹氣鼓風機(Aeration blower)的目 的為何?(A) 維持耗氧菌的生生不息(B) 吹除污水表面浮渣(C) 將沉澱殘渣吹上水面(D)
34.輔鍋爐燃油噴射系統中,為改進「壓力式霧化器」的缺點,可選用「回油型霧化器」,對霧化室充分供油,使噴射壓力保持一定,超過噴射所需燃油,則流回燃油泵的吸入側。其原理是利用燃油系統上的何種裝置或方法來
37. Who is responsible to enter all the events encountered during the duty watch into the engine log
38. When can the cover of the crank case of a diesel engine be opened for investigation?(A) When the
36.有關氣焊作業安全注意事項之敘述,下列何者錯誤?(A)從事氣焊作業之工作人員,應戴用遮光面罩,著防護衣,戴手套,並應預防高勢之星濺入鞋內(B)經常以肥皂水檢查焊接裝置有無洩氣(C)應在耐火之地面從
39. A main diesel engine is generally started by:(A) Compressed air(B) Electrical motor(C) Hydraulic
37.In general, what are the types of the propulsion plant employed by ships?①diesel engine②gas turbi
38.Which operation is performed with the objective to ensure the axis of engine shaft is straight,un
39.Which type of marine propulsive engine is well suitable for merchant ships due to its simplicitya