石油北京17春油气储运工程专业英语第三阶段在线作业
石油北京17春油气储运工程专业英语第三阶段在线作业单选题 (共10道题)
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1.（2.5分） If the refinery is supplied by tanker, days of storage is recommended.
A、30-32
B、32-35
C、6
D、16-18
我的答案：B 此题得分：2.5分
2.（2.5分） Natural gas demand is highly dependent on .
A、weather
B、regulation
C、production
D、compressor
我的答案：A 此题得分：2.5分
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、temperature
B、pressure
C、insulation
D、shape
我的答案：C 此题得分：2.5分
4.（2.5分） For fixed-roof tank, which one is right？
A、For cone-roof tanks, they don’t have cylindrical shells.
B、For cone-roof tanks, the top is made in the form of a shallow cone.
C、Umbrella-roof tanks are usually constructed to diameters larger than 60ft.
D、For umbrella-roof tanks, there are column supports that must be run to the bottom of the tank.
我的答案：B 此题得分：2.5分
5.（2.5分） For floating-roof tanks, they have a cover that floats on the surface of the .
A、liquid
B、pipeline
C、gas
D、shell
我的答案：A 此题得分：2.5分
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.
A、weight
B、diameter
C、buoyancy
D、pressure
我的答案：C 此题得分：2.5分
7.（2.5分） Corrosion is usually the most severe at the .
A、bottom
B、top
C、shell
D、interface
我的答案：A 此题得分：2.5分
8.（2.5分） It is necessary to dry natural gas pipelines, .
A、after hydrostatic testing
B、when the line is put into service
C、following pipeline construction
D、before hydrostatic testing
我的答案：A 此题得分：2.5分
9.（2.5分） During hydrostatic testing, fill the line with water and subjecting it to a pressure to check for leaks.
A、greater than the design operating pressure
B、the same as the design operating pressure
C、lower than the design operating pressure
D、the same as the allowable pressure
我的答案：A 此题得分：2.5分
10.（2.5分） Metering problem is more complicated in gas lines since corrections are more important.
A、temperature
B、pressure
C、temperature and pressure
D、volume
我的答案：C 此题得分：2.5分
多选题 (共13道题)
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11.（2.5分） Factors help determine the amount of storage a refinery needs for both feedstock and products include:
A、product delivery
B、refinery complexity
C、seasonal demand
D、turnarounds
我的答案：ABCD 此题得分：2.5分
12.（2.5分） At tanker terminals, the amount of storage depends on：
A、the amount and type of product handled
B、the number, capacity, and type of tanker berths
C、expected periods of downtime
D、the number and size of ships using the terminal�
我的答案：ABCD 此题得分：2.5分
13.（2.5分） Considerations involved in designing large crude storage tanks include：
A、integrity of the foundation
B、safety
C、maintenance requirements and ease of maintenance
D、operating efficiency
我的答案：ABCD 此题得分：2.5分
14.（2.5分） For EFR, which ones are right?
A、The design conditions of the external floating roof are more severe.
B、Pontoon roof is simply a steel deck with an annular compartment that provides buoyancy.
C、Double-deck roofs are strong and durable roofs.
D、Pontoon roofs are suitable for large diameter tanks.
我的答案：ABC 此题得分：2.5分
15.（2.5分） For IFR, which ones are right?
A、IFR is covered by a fixed roof on top of the tank.
B、Pan roofs are simple sheet-steel disks with the edge turned up for buoyancy.
C、Bulkhead pan roof has open annular compartments at the periphery to prevent the roof from sinking.
D、Skin and pontoon roofs are usually constructed of an aluminum skin supported on a series of tubular aluminum pontoons.
我的答案：ABCD 此题得分：2.5分
16.（2.5分） For floating roof, it can .
A、reduce emissions from the storage of volatile organic compounds
B、reduce the potential for vapor space explosions
C、eliminate the possibility of boilover phenomenon
D、be constructed of steel
我的答案：ABC 此题得分：2.5分
17.（2.5分） For double-deck roof, which ones are right?
A、It is the heaviest but most durable construction of all the roofs.
B、It is most economic for small diameters up to about 30ft and very large diameter from about 200 to over 300ft.
C、It maintains good rigidity under normal conditions.
D、It is much better insulated from solar heat gain�.
我的答案：ABCD 此题得分：2.5分
18.（2.5分） PV Valves are often referred to as .
A、pressure vacuum vent valves
B、pressure volume valves
C、breather valves
D、conservation valves�
我的答案：ACD 此题得分：2.5分
19.（2.5分） For actual installation of pipeline, which ones are right?
A、Applying coating and wrapping to the exterior of the pipe should be done after welding.
B、Testing pipeline for leak is the last step.
C、Width of the pipeline ditch varies according to the size of the pipeline.
D、Backfilling of the ditch on top of the pipeline can be done with the soil excavated from the ditch.
我的答案：ABCD 此题得分：2.5分
20.（2.5分） About corrosion, which are right?
A、Corrosion of iron and steel is a natural process.
B、Iron is not stable in its refined state.
C、Corrosion is selective and concentrated.
D、The basic corrosion mechanism of iron underground is electrochemical�.
我的答案：ABCD 此题得分：2.5分
21.（2.5分） In selecting product for coatings, which should be considered?
A、Elasticity
B、Hardness
C、Adherence
D、Ease of application
我的答案：ABCD 此题得分：2.5分
22.（2.5分） For gas metering, which ones are right?
A、The utilization range of a differential pressure meter is relatively narrow.
B、Positive-displacement meter has a direct reading of volumes.
C、For turbine-type meters, mechanical friction in the turbine must be minimal.
D、Mass-flow meters directly measure the mass of the fluid passing through the meter.
我的答案：ABCD 此题得分：2.5分
23.（2.5分） For liquid metering, which ones are right?
A、A pipeline meter must be sturdy enough.
B、The parts in the positive-displacement meters have to be very precisely machined.
C、The products through positive-displacement meters must be filtered.
D、Compared with PD meters of equal output, turbine meters are much less bulky, sturdier and of simpler design.
我的答案：ABCD 此题得分：2.5分
判断题 (共17道题)
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24.（2.5分） The capacity of individual storage tanks or facilities varies widely.
正确
错误
我的答案：正确 此题得分：2.5分
25.（2.5分） If products are delivered continuously to a pipeline, storage needs will be reduced.
正确
错误
我的答案：正确 此题得分：2.5分
26.（2.5分） A refinery must have storage for crude to feed the refinery and the products it manufactures.
正确
错误
我的答案：正确 此题得分：2.5分
27.（2.5分） Natural gas can’t be stored in depleted oil-producing formations.
正确
错误
我的答案：错误 此题得分：2.5分
28.（2.5分） Low-pressure tanks mean tanks designed for a lower pressure than atmospheric tanks�.
正确
错误
我的答案：错误 此题得分：2.5分
29.（2.5分） Almost all tanks are cylindrical on the shell portion.
正确
错误
我的答案：正确 此题得分：2.5分
30.（2.5分） IFR is open on top of the tank.
正确
错误
我的答案：错误 此题得分：2.5分
31.（2.5分） Flat-bottom tank is used for tanks less than 60-200 ft in diameter.
正确
错误
我的答案：错误 此题得分：2.5分
32.（2.5分） The internal floating roofs may be constructed of steel or aluminum or plastic�.
正确
错误
我的答案：正确 此题得分：2.5分
33.（2.5分） Extensive testing of welders and the welds they produce is not important for the construction of all long-distance petroleum pipelines.
正确
错误
我的答案：错误 此题得分：2.5分
34.（2.5分） Most offshore pipelines are not buried below seabed.
正确
错误
我的答案：错误 此题得分：2.5分
35.（2.5分） Corrosion is distributed�over the entire metal surface.
正确
错误
我的答案：错误 此题得分：2.5分
36.（2.5分） Electrolytic corrosion may be rapid and intensive�.
正确
错误
我的答案：正确 此题得分：2.5分
37.（2.5分） Insulation of pipeline from soil with a suitable coating is enough.
正确
错误
我的答案：错误 此题得分：2.5分
38.（2.5分） For refined hydrocarbon storage tanks, bottom pitting and general corrosion are less severe than crude oil tanks.
正确
错误
我的答案：正确 此题得分：2.5分
39.（2.5分） Metering liquid-carry lines requires even higher accuracy than gas pipelines.
正确
错误
我的答案：正确 此题得分：2.5分
40.（2.5分） The meters must be calibrated under the actual working conditions.
正确
错误
我的答案：正确 此题得分：2.5分
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