4. _________ are used widely in marine applications in combustion equipment such as main
engines, auxiliary engines and boilers.
(A) Heavy fuel oils
(B) Coals
(C) Paraffins
(D) Gasoline oils
17. Although the liquid-level indicating system is installed, a ________ is generally installed for the
traditional tank level measurement.
(A) liquid sensing tube
(B) air purge tube
(C) sounding tube
(D) capillarity tube
21. In the two-stroke engine, each revolution of _____________ creates one power or working
stroke.
(A) the turning gear
(B) the compressor
(C) the crankshaft
(D) the turbo-charger
22. The ______ of the electrical power system are maintained within the prescribed tolerances.
(A) voltage and frequency
(B) current and gates
(C) voltage and torque
(D) frequency and transformation
23. With the initiative of improving fuel economy, fuel treatments become essential for propulsive
diesel engine due to the usage of ___________.
(A) Low Sulphur Fuel Oil
(B) Residual oil
(C) Marine Diesel Oil
(D) Marine Gas Oil
26. The main function of the intercooler of a multistage air compressor is what?
(A) to increase the temperature of working fluids
(B) to reduce the pressure of working fluids
(C) to reduce the pumping power input for a given flow rater
(D) to increase the pumping speed for a given flow rater
30. While it is often technically possible to install a single generator of sufficient capacity to satisfy
all requirements, multiple generators are normally installed. One reason for multiple units is that a
single generator failure would otherwise incapacitate the entire electric plant; and other is that
part-load operation of a single generator would be at an excessively low power level. In what
follows, which is not the reason to install the multiple generators?
(A) The sufficient power capacity could not be satisfied by a single generator.
(B) A single generator can not provide reliable electrical power supply when a single generator
failure occurs.
(C) The part-load operation of a single generator at an excessively low power level is unlikely to
occur.
(D) The multiple generators could also provide electrical power supply even if a single generator
failure occurs.
31. The oil burners generally consist of two principal parts, namely the atomizer and the air
__________.
(A) injector device
(B) compressive component
(C) cooling fin
(D) register assembly
36. What are the safety management objectives for a shipping company? ①provide for sea
practices in ship operation and a safe working environment ②establish safeguards against all
identified risks③continuously improve safety-management skills of personnel ashore and aboard
of ships ④make the comfortable implements for the rest of seafarers.
(A) ①②③
(B) ②③④
(C) ①③④
(D) ①②④
38. Before starting propulsion engines that are directly connected to the propeller, permission
must be obtained from which authority?
(A) The bridge
(B) The engine room
(C) The marine engineer on duty
(D) The first marine engineer