14. What ratio could be treated as the mechanical efficiency of a diesel engine?(A) Brake mean effec
19. “一冷凍噸”的定義是指一日（24 小時）之內將一噸（1,000kg）0℃的水製成 0 ℃的冰。假設水之蒸發潛熱為 79.68kcal/kg，試問一冷凍噸約等於多少 kcal/小時？ (A) 2
20. 冷凍系統中如有空氣混入，則會出現何種現象？ (A) 冷凝器內之壓力與溫度會下降，冷凍效果降低 (B) 冷凝器內之壓力與溫度會上升，冷凍效果提高 (C) 冷凝器內之壓力與溫度會下降，壓縮機消耗功
23. Ina steam turbine engine, the_____ is the energy required to spin the turbine backwards inthe at
25. For a diesel engine an initial downward stroke of the piston draws in the air to charge thecylin
29. Which component is used in a gas turbine engine to convert the chemical energy from fuelinto the
30. 雙俥軸船的螺槳，通常以下列何種佈局方式較常見，且推進時較不易捲入水面浮物（螺槳轉向定義為自船艉向船艏看）？ (A) 左舷及右舷螺槳皆順時轉 (B) 左舷及右舷螺槳皆逆時轉 (C) 右舷螺槳順時
35. 下列何種閥必須於瞬間全開或全關？(A) 安全閥（ Safety valve） (B) 減壓閥（ Pressure reduction valve） (C) 洩壓閥（ Pressure reli