Which of the listed materials would be considered as a bunting class "C" fire?（）

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• Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?（）

  A . signaling that all personnel are clear before lifting or lowering material B . Examining material for sharp edges or protruding points before handling C . Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipment D . Throwing materials from high places to the deck

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• Which of the listed effects represents the purpose of heat treating steel?（）

  A . Develop ductility B . Improve machining qualities C . Relieves stresses D . All of the above

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• Which of the listed cylinder liner surface conditions indicates proper lubrication?（）

  A . Dull black appearance B . Bright appearance C . Thin layer of lacquer D . Thick oily film

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• Which of the listed statements is correct concerning refrigeration systems?（）

  A . Dehydrators must be used continuously in a refrigeration system B . A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hours C . A thermostatic expansion valve is used to control refrigerated space temperature D . The liquid receiver functions to collect and remove non- condensable gase

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• Which of the listed classes of fire would most likely occur in the engine room of a vessel?（）

  A . Classes A and B B . Classes B and C C . Classes C and D D . Classes A and D

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• Which of the listed refrigeration system components keeps the refrigerant circulating through the system?（）

  A . Expansion valve B . Condenser C . Evaporator D . Compressor

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• Which of the processes listed consumes the greatest amount of power while producing the greatest amount of heat?（）

  A . Overcoming sliding friction B . Overcoming rolling friction C . Overcoming fluid friction D . Overcoming oil wedge frictio

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• Which of the petroleum products listed has the lowest flash point?（）

  A . Hydraulic oil B . Lubricating oil C . Diesel oil D . Refrigeration oil

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• Which of the following are characteristics of named access lists?（）

  A . Individual statements in a named access list may be deleted. B . They require a numbered range from 1000 to 1099. C . When created, they must be specified as standard or extended. D . They are created with the ip access-list command. E . The entire access list must be deleted before editing. F . They are applied with the ip name-group command.

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• Which of the following materials is a good insulator?（）

  A . steel B . aluminum C . glass D . copper

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• Which of the listed statements is correct concerning the starting of centrifugal pumps?（）

  A . They should always be started with the discharge valve closed B . They should always be started with the discharge valve opened C . A priming pump is always required to flood the impeller suction D . They should always be started with the sealing line valves closed

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• Which of the listed burning materials would be described as a class "B" fire?（）

  A . Acetylene B . Lube oil C . Grease D . All of the above

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• In which of the listed hydraulic systems will the installation of an oil cooler be necessary?（）

  A . Constant tension mooring winch system B . Hatch cover system C . Watertight door system D . Internal combustion engine hydraulic starter system

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• Which of the listed bearing types is an example of a solid bearing?（）

  A . Piston wrist pin bushing B . turbine bearing C . Spring bearing D . Diesel engine main bearing

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• In which of the listed refrigeration system components does superheating of the refrigerant take place?（）

  A . Expansion valve B . Evaporator C . Drier D . Receiver

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• If ignited, which of the listed materials would be a class "B" fire?（）

  A . Magnesium B . Paper C . Wood D . Diesel Oil

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• Using the LIST command in Recovery Manager (RMAN), which two pieces of information in the RMANrepository can be listed?（）

  A . stored scripts in the recovery catalog B . backups that can be deleted from disk C . backup sets and image copies are obsolete D . backups that do not have the AVAILABLE status in the RMAN repository RMAN

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• Which of the following is the correct command to list the filesystems in datavg?（）

  A . lsvg -p datavg B . lsvg -l datavg C . lsvg -L datavg D . lsvg -o datavg

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• Which of the devices listed is common to all types of pumps?（）

  A . A power end and fluid end B . A propeller and educator C . A volute and impeller D . A turbine and pisto

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• Which of the following answer choices are correct characteristics of named access list?（）

  A . You can delete individual statements in a named access list B . Named access lists require a numbered range from 1000 to 1099. C . Named access lists must be specified as standard or extended. D . You can use the ip access-list command to create named access lists. E . You cannot delete individual statements in a named access list. F . You can use the ip name-group command to apply named access lists.

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• measures that degree to which the revenue from selling products exceeded the cost of the materials used to produce them.

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• APA documentation has a twofold purpose: to list all of the sources used in a paper and to identify the specific location of each item of borrowed material.

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• Which type of contract requires that the buyer keep the tightest labor/material cost control？

  A Cost Plus Incentive Fee B Cost Plus Percentage of Costs C Cost Plus Fixed Fee D Firm Fixed Price E Firm Fixed Price Plus Incentive

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• Which of the following is the best reason for pouring a condensation impression material as soon as possible()

  A．the degree of polymerization of condensation polymers is initially high and then decreases with time B．evaporation of a volatile by-product causes shrinkage ofthe set material C．If left unpoured，condensation impression materials expand as they absorb water from air D．condensation polymers will start to react with the polymer of the impression tray and cause distortion

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