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单选题
Which of the fluids listed is normally used to condense the primary refrigerant in a shipboard central air conditioning system?（）
A
Air or Nitrogen
B
Seawater or Fresh water
C
Sodium Nitrate brine
D
Calcium Sulfate brine
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Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A.Pressure-reducing valveB.Unloading valveC.Counterbalance valveD.Pressure-relief valve
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Which of the units listed is used to combust waste in the engine room?A.BoilerB.IncineratorC.Generator
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If a vessel subject to PSC inspection, PSC Officer shall give the inspection to the Captain, the given timeframe for rectification of each deficiency is commonly given in a coded form which called “action code”, which code listed below is used for indication of detention of the vessel?（）A、10B、30C、17D、16
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Which device is normally used to translate telephone numbers or names to IP addresses for call routing in an H.323 network？ （）A、call agentB、IP phoneC、multipoint control unitD、gatekeeper
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单选题To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）A
Speed limiting governorB
Over-speed governorC
Over-speed tripD
Over-speed relay
考题
单选题If a vessel subject to PSC inspection, PSC Officer shall give the inspection to the Captain, the given timeframe for rectification of each deficiency is commonly given in a coded form which called “action code”, which code listed below is used for indication of detention of the vessel?（）A
10B
30C
17D
16
考题
单选题Which of the valves listed should be used either in the fully opened or the fully closed position?（）A
A gate valveB
A globe valveC
Any check valveD
Any needle valve
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单选题Which is normally used to hold wire rope for splicing（）.A
Come alongB
JiggerC
Rigger's screwD
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单选题Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）A
Hydrochloric acidB
ChlorineC
Sulfuric acidD
Zinc chromate
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单选题Freon 12 which is used to produce intense cold is normally a （） when at atmospheric pressure and temperature.A
liquidB
gasC
solidD
water only
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单选题Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? （）A
Viscosity is decreasedB
Octane number is alteredC
Pump speed is decreasedD
Blower’s speed is decreased
考题
单选题Which of the listed devices is used to measure pressure and convert it to an electrical signal?（）A
TransducerB
ReducerC
TransformerD
Rectifier
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单选题The temperature at which water vapor in the atmosphere begins to condense is called the （）.A
dew point temperatureB
condensation temperatureC
psychometric temperatureD
absolute humidity temperature
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单选题Which of the listed devices could be used as a substitute for a ring grooving tool?（）A
Steel brushB
Fine emery cloth or steel woolC
A section of the removed compression ringD
A case hardened scraper
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单选题A low pressure annular preventer which is used to direct flow of kick fluids away from the rig floor is called a （）.A
dump valveB
deflectorC
separatorD
diverter
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单选题Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?（）A
Splash lubricationB
Pressure lubricationC
Sight feed lubricatorsD
Mechanical lubricators
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单选题In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?（）A
DifferentialB
TrunkC
BarrelD
Valve-in-head
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单选题Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?（）A
CopperB
Copper and carbonC
CarbonD
Bronze
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单选题Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）A
AtomizationB
MeteringC
Effective strokeD
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单选题Which statement is TRUE concerning lifeboat gripes?（）A
They must be released by freeing a safety shackleB
They should not be released until the boat is in lowering positionC
They may be adjusted by a turnbuckleD
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单选题Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?（）A
Steel brushB
Fine emery cloth or steel woolC
A section of the removed compression ringD
A case hardened scraper
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单选题Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）A
ElectricB
HydraulicC
AirD
All of the above
考题
单选题A breeches buoy is being rigged from the shore to a stranded vessel. The initial shot line passed to the vessel is normally made fast to a（）.A
hawser which is used to pass a tail-block and whip to the vesselB
hawser with breeches buoy and harness attachedC
hawser which should be made fast to the vessel below the intended location of the tail-blockD
tail-block and whip which may be used to pass a hawser to the vessel
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