8. What following set of pumps is positive displacement type?
(A) Rotary pump and Reciprocating pump
(B) Centrifugal pump and Injection pump
(C) Centrifugal pump and Rotary pump
(D) Volute pump and Injection pump
10. 下列何者適用於描述檢修引擎之準備工作?
(A) Keep the engine ready for being started up
(B) Check if no one is around the engine
(C) Check the holding capacities of fuel oil, air, etc.
(D) Prepare engine jigs and tool ready to use
22. The engine logbook should normally be kept at a convenient place in _________.
(A) Wheel House.
(B) Ship's Library.
(C) Engine Control Room.
(D) Engine Store Room.
23. Which type of valve should be installed where an undesired reversal of flow is restricted on the
piping line?
(A) Sluice valve
(B) Needle valve
(C) Check valve
(D) Globe stop valve
32. Which efficiency is the ratio of the brake mean effective pressure to the indicated mean
effective pressure?
(A) overall efficiency
(B) isentropic efficiency
(C) mechanical efficiency
(D) thermal efficiency