3. __________ is the gas exchange process in which the charge air passes over the piston crown
and rises to form a loop within the cylinder, expelling exhaust gases through exhaust ports cut in
the same side of the liner above the scavenge ports.
(A) Loop flow scavenging
(B) Cross flow scavenging
(C) Uniflow scavenging
(D) Standard flow scavenging
4. What equipment is used to relieve excess pressure. It only fitted on top of boiler and prevents
pressure to excess in boiler?
(A) Quick closing valve
(B) Relief valve
(C) Globe valve
(D) Safety valve
8. In case of a failure of the engine _________ occurred during maneuvering , the main engine
control mode can be changed to an emergency control stand at local.
(A) monitoring system
(B) fuel oil system
(C) lube oil system
(D) control system
9. By pouring oil to tanks one by one, we can prevent overflowing and the loading equipment from
_________ by extra-ordinary pressure.
(A) damage
(B) having damage
(C) to be damaged
(D) being damaged
13. 09:30 Transferred bilge water from portside engine room forward bilge well to _______________
.
(A) overboard directly
(B) bilge water holding tank
(C) boiler water feed tank
(D) sewage water collecting tank
14. Which kind of the membrane desalination process can provide a proven capability to
effectively and continuously generate fresh water from seawater?
(A) assimilation
(B) diffusion
(C) dissipation
(D) reverse osmosis
15. A mechanical attack on the metal surface may be due to a disturbance in the flow of water
over the blade arising from damage, in which case it tends to be localized in the form of comets.
The erosion may be caused by which of the following reason?
(A) General
(B) Galvanic
(C) Gravity
(D) Cavitation
19. ________ is a pump or other machine for reducing volume and increasing pressure of gases in
order to condense the gases, drive pneumatically powered machinery, etc.
(A) Comminuter.
(B) Compressor.
(C) Agitator.
(D) Calorifier.
20. Compression was obtained within all cylinders as the engine's ________ was rotated.
(A) turbo-charger
(B) crankshaft
(C) lubricating pump
(D) balancer
29. Which physical property for the diesel engine fuel is usually assessed as energy per unit
mass?
(A) Viscosity
(B) Diffusivity
(C) Heating value
(D) Thermal conductivity
32. Which conventions are under port state control can be carried out?①SOLAS 74 ②Atlas map
convention 86 (AMC 86) ③STCW 78/95 ④MARPOL 73/78
(A) ①②③
(B) ②③④
(C) ①③④
(D) ①②④
33. What temperature is measured by a common thermometer?
(A) Dry-bulb temperature
(B) Wet-bulb temperature
(C) Dew-point temperature
(D) Flashing temperature
38. Which type of marine propulsive engine can offer the advantages of relativily low weight and
space requirements?
(A) Diesel engine
(B) Steam turbine engine
(C) Gas turbine engine
(D) Steam reciprocating engine