2. 燃料油從油艙駁到沉澱油櫃，沉澱油櫃需加熱到多少溫度，以增加油與水之比重差，使水分與燃料最容易分離沉澱？ (A) 30℃左右 (B) 40℃左右 (C) 50℃左右 (D) 60℃左右

39. Check valves must be provided on pump suctions to prevent pumping through the standby pump to the sump. Pump isolating valves should be provided to permit underway repair of either pump. Based on these descriptions, which is the correct statement？ (A) The isolating valves must be non-return valves. (B) The check valve also needs to be positioned at the pump exit in order to improve the pumping efficiency. (C) The check valve allocated on pump suctions permits no flow from the idle pump into the sump. (D) The check valve allocated on pump suctions permits the isolation of the running and standby pumps so that the isolating valves could be ignored for the emergency operation.

2. 燃料油從油艙駁到沉澱油櫃，沉澱油櫃需加熱到多少溫度，以增加油與水之比重差，使水分與燃料最容易分離沉澱？
(A) 30℃左右
(B) 40℃左右
(C) 50℃左右
(D) 60℃左右

相關試題

相關試卷

2. 燃料油從油艙駁到沉澱油櫃，沉澱油櫃需加熱到多少溫度，以增加油與水之比重差，使水分 與燃料最容易分離沉澱？ (A) 30℃左右 (B) 40℃左右 (C) 50℃左右 (D) 60℃左右

相關試題

相關試卷

2. 燃料油從油艙駁到沉澱油櫃，沉澱油櫃需加熱到多少溫度，以增加油與水之比重差，使水分與燃料最容易分離沉澱？
(A) 30℃左右
(B) 40℃左右
(C) 50℃左右
(D) 60℃左右