The deck control valve to be（）after being repaired.

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• To “shore up” the main deck for the stowage of deck cargo means to（）.

  A . weld pad eyes on deck in proper position to secure the cargo B . strengthen the main deck by placing pillars underneath it in the tween-decks C . distribute the weight of the cargo by placing fore-and-aft planks on the main deck D . package the cargo in wooden crates so it will not damage the deck

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• In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.

  A . open and individual tank valves open B . open and the individual tank valves closed C . closed and the individual tank valves closed D . closed and the individual tank valves ope

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• The series of valves used to control the return flow in well control operations is called the（）.

  A . valve assembly B . standpipe manifold C . accumulator manifold D . choke manifold

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• Which of the following problems will occur if the internal drain at either end of a hydraulic, two-way, spool-type directional control valve cylinder were to become plugged?（）

  A . The reservoir would become vapor bound B . The valve would be placed in hydraulic lock C . The spring loaded relief ports would open D . The buffering chambers would be unable to functio

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• （） are used to limit the pressure in any particular portion and mainly control the pressure after the valve.

  A、Relief valves B、Safety valves C、Check valves D、Reducing valves

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• A more sophisticated pressure reducing valve incorporates a pilot valve which controls the fluid above the valve operating piston in response to downstream pressureThe bold and italic word “which” means （）.

  A . a pressure reducing valve B . a pilot valve C . an operating piston D . downstream pressure

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• The expansion valve on a Freon system controls the （）.

  A . superheat of the gas leaving the compressor B . back pressure in the evaporator C . temperature of the icebox D . superheat of the gas leaving the evaporator

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• In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.

  A . open and individual tank valves open B . open and the individual tank valves closed C . closed and the individual tank valves closed D . closed and the individual tank valves ope

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• Prior to running the hydraulic pump, examine the system carefully and ensure that the lever of control valves is in （） position.

  A . neutral B . end C . opening D . closure

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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 valve B . Unloading valve C . Counterbalance valve D . Pressure-relief valve

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• Compensated flow control or constant flow valves are used in hydraulic systems to（）

  A . compensate for major leaks in the system B . maintain the original fluid viscosity C . allow for changes in pressure and temperature within the system D . assure constant fluid temperature

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• Operation of the valve control release on a fixed CO2 system must immediately（）.

  A . release CO to the protected space B . secure all mechanical ventilation in the protected space C . sound the rig's general alarm signal for a fire D . sound an alarm in the ballast control room

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• The deck loads on a ship are distributed through the deck beams to the（）.

  A . frames B . hull C . stringers D . plate

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• A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.

  A . evaporator pressure decrease B . evaporator coil over-feed C . evaporator capacity increase D . expansion valve diaphragm rupture

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• Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

  A . double bottom fuel oil tank temperature B . heater supply steam flow C . pressure of the fuel supplied to the burners D . attemperator steam flow in the heater discharge circuit

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• According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）

  A . Electrical cut off switch B . A fusible link C . Manual cut off switch D . A water spray actuator

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• （） supplies pilot air to control the cylinder air start valves.

  A . An air compressor B . An indicator cock C . An air distributor D . A safety valve

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• Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to （）.

  A . react with insufficient speed droop B . fail to react to small speed changes C . have excessive sensitivity to small speed changes D . remain in the neutral positio

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• Control valves of a CO2 system may be located within the protected space when（）.

  A . it is impractical to locate them outside B . there is also a control valve outside C . the CO cylinders are also in the space D . an automatic heat-sensing trip is installed

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• The timing of diesel engine air starting valves is controlled by（）

  A . the air start valve timing gears and rods B . a cylinder check valve C . individual cams and valve gear D . an air manifold poppet valve

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• A cutoff valve in the fire-main system of a ship may be closed to protect the portion of the system on an exposed deck from（）.

  A . damage from crane operations B . being used for wash down purposes C . accidental diversion of flow to wrong location D . freezing

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• Upon the survey it is found the deck control valve of the fore peak tank could not be（）.

  A . tighted formally B . shut tightly C . combined properly D . closed suitably

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• The deck control valve to be（）after being repaired.

  A . moved and fitted again B . removed and refitted C . reproduced and put on again D . returned and attached agai

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• A cabinet or space containing the controls or valves for the fixed firefighting system must be（）.

  A . posted with instruction on the operation of the systm B . ventilated and equipped with explosion-proof switches C . painted with red and black diagonal stripes D . equipped with a battery powered source of emergency lighting

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