中石油北京19春《油气储运工程专业英语》第三阶段在线作业

1.2.5分) If the refinery is supplied by tanker, days of storage is recommended.
  A30-32
  B32-35
  C6
  D16-18
正确答案:
2.2.5分) Natural gas demand is highly dependent on .
  Aweather
  Bregulation
  Cproduction
  Dcompressor
正确答案:
3.2.5分) Because LNG must be stored at very low temperatures to maintain it in a liquid state, is one of the most important elements of LNG storage design?.
  A氢能、temperature
  Bpressure
  Cinsulation
  Dshape
正确答案:
4.2.5分) For fixed-roof tank, which one is right
  AFor cone-roof tanks, they don’t have cylindrical shells.
  BFor cone-roof tanks, the top is made in the form of a shallow cone.
  CUmbrella-roof tanks are usually constructed to diameters larger than 60ft.
  DFor umbrella-roof tanks, there are column supports that must be run to the bottom of the tank.
正确答案:
5.2.5分)探索创新 For floating-roof tanks, they have a cover that floats on the surface of the .
  Aliquid
  Bpipeline
  Cgas
  Dshell
正确答案:
6.2.5分) The floating cover or roof is a disk structure that has sufficient to ensure that
the roof will float under all expected conditions.
  Aweight
  Bdiameter
  Cbuoyancy
  Dpressure
正确答案:
7.2.5分) Corrosion is usually the most severe at the .
  Abottom
  Btop
  Cshell
  Dinterface
正确答案:
8.2.5分) It is necessary to dry natural gas pipelines, .
  Aafter hydrostatic testing
  Bwhen the line is put into service
煅烧氧化铝  Cfollowing pipeline construction
  Dbefore hydrostatic testing
正确答案:
9.2.5分) During hydrostatic testing, fill the line with water and subjecting it to a pressure to check for leaks.
  Agreater than the design operating pressure
  Bthe same as the design operating pressure
铸造合金钢  Clower than the design operating pressure
  Dthe same as the allowable pressure
正确答案:
10.2.5分) Metering problem is more complicated in gas lines since corrections are more important. slie
  Atemperature
  Bpressure
  Ctemperature and pressure
  Dvolume
正确答案:
11.2.5分) Factors help determine the amount of storage a refinery needs for both feed
stock and products include:
  Aproduct delivery
  Brefinery complexity
  Cseasonal demand
  Dturnarounds
正确答案:
12.2.5分) At tanker terminals, the amount of storage depends on
  Athe amount and type of product handled
  Bthe number, capacity, and type of tanker berths
  Cexpected periods of downtime
  Dthe number and size of ships using the terminal?
正确答案:
13.2.5分) Considerations involved in designing large crude storage tanks include
  Aintegrity of the foundation
  Bsafety
  Cmaintenance requirements and ease of maintenance
  Doperating efficiency
正确答案:
14.2.5分) For EFR, which ones are right?
  AThe design conditions of the external floating roof are more severe.
  BPontoon roof is simply a steel deck with an annular compartment that provides buoyancy.
  CDouble-deck roofs are strong and durable roofs.
  DPontoon roofs are suitable for large diameter tanks.
正确答案:
15.2.5分) For IFR, which ones are right?
  AIFR is covered by a fixed roof on top of the tank.
  BPan roofs are simple sheet-steel disks with the edge turned up for buoyancy.
  CBulkhead pan roof has open annular compartments at the periphery to prevent the roof from sinking.
  DSkin and pontoon roofs are usually constructed of an aluminum skin supported on a series of tubular aluminum pontoons.
正确答案:
16.2.5分) For floating roof, it can .
  Areduce emissions from the storage of volatile organic compounds
徽州商王
  Breduce the potential for vapor space explosions
  Celiminate the possibility of boilover phenomenon
  Dbe constructed of steel
正确答案:
17.2.5分) For double-deck roof, which ones are right?
  AIt is the heaviest but most durable construction of all the roofs.
  BIt is most economic for small diameters up to about 30ft and very large diameter from about 200 to over 300ft.
  CIt maintains good rigidity under normal conditions.
  DIt is much better insulated from solar heat gain?.
正确答案:
18.2.5分) PV Valves are often referred to as .
  Apressure vacuum vent valves
  Bpressure volume valves
  Cbreather valves
  Dconservation valves?
正确答案:
19.2.5分) For actual installation of pipeline, which ones are right?

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