A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the ______.A.annular blowout preventerB.annulusC.accumulatorD.automatic

题目

A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the ______.

A.annular blowout preventer

B.annulus

C.accumulator

D.automatic choke

相似考题

1.The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?A.The profile of the valve is like a globeB.The valve seat is set into the bulbous bodyC.The plug or disc of the valve is made vertical to the axis of the pipeD.The valve seat is located at right side of the plug or disc

2.We usually keep a large supply()stock.A、 atB、 onC、 in

3.Large fish usually ____ small fish.A：gatherB：take onC：feed onD：organize

4.Banks will usually grant unsecured loans to ______.A．individuals with steady job held for yearsB．individuals with a good credit recordC．large commercial companies with a strong financial conditionD．all of the above

更多“A large valve,usually installed above the ram preventers,that forms a seal in the annular ”相关问题

  • 第1题：

    The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.

    A.butterfly valve

    B.spectacle valve

    C.check valve

    D.globe valve


    正确答案：C

  • 第2题：

    Between 1960 and 1990,a large number of people moved from（）

    Acore cities to the suburbs

    Brural areas to cities

    Csmall cities to large cities

    DNone of the above


    A
    略

  • 第3题：

    单选题
    Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.
    A

    cargo pump failure

    B

    blower failure

    C

    deck seal low water level

    D

    low inert gas temperature


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    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


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the（）.
    A

    annular blowout preventer

    B

    annulus

    C

    accumulator

    D

    automatic choke


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    （）are usually stowed both above and below deck.
    A

    Containers

    B

    Trucks

    C

    Machinery

    D

    Clamps


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    Exhaust valve openings in a diesel engine cylinder head are made as large as practical to （）
    A

    increase back pressure during the exhaust process

    B

    facilitate periodic replacement of the valves

    C

    reduce the pumping loss associated with scavenging

    D

    reduce tension on valve springs


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Moisture in a refrigeration system can cause （）.
    A

    freezing the expansion valve closed

    B

    corrosion of system piping

    C

    improper temperature regulation

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    After passing through the expansion valve the refrigerant should be in the state of （）.
    A

    vapor

    B

    liquid

    C

    solid

    D

    None of the above is tree


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    The valve on the discharge side of a cargo pump on a tanker will usually be a（）.
    A

    butterfly valve

    B

    spectacle valve

    C

    check valve

    D

    globe valve


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    What is the purpose of a relief valve?（）
    A

    to fill 2 tanks at the same time

    B

    to use pump at a higher pressure

    C

    to return liquid to suction side if discharge valve is closed

    D

    All of the above are true


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.
    A

    butterfly valve

    B

    spectacle valve

    C

    check valve

    D

    globe valve


    正确答案： A
    解析： 暂无解析

  • 第13题：

    The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the ______．

    A.Actuator

    B.Annulus

    C.Accumulator

    D.Annular preventer


    正确答案：C

  • 第14题：

    The oil is usually pumped into ship at the loading port by（）.

    • A、ship’s own pumps
    • B、shore pumps
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  • 第15题：

    单选题
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    A

    at

    B

    on

    C

    in


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    解析： 暂无解析

  • 第16题：

    单选题
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    A

    throughput

    B

    back pressure

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    gravity disc

    D

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    解析： 暂无解析

  • 第17题：

    单选题
    Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operationAccording to the above sentence, which of the following statements is not true?（）
    A

    The globe valve may be suitable for partially open operation

    B

    The globe valve will give full bore flow with change of direction

    C

    The gate valve gives full bore flow with change of direction

    D

    The gate valve is suitable for full bore operation only


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    The（） is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.
    A

    main stem stop valve

    B

    auxiliary steam stop valve

    C

    feed check or control valve

    D

    blow down valve


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    A relief valve for a cargo pump is generally installed（）.
    A

    after the discharge valve

    B

    between the pump and discharge valve

    C

    after the suction valve

    D

    between the pump and suction valve


    正确答案： D
    解析： 暂无解析

  • 第20题：

    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

    Copper

    B

    Copper and carbon

    C

    Carbon

    D

    Bronze


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    During inspection of the machinery space, which of the following statements points to an unsatisfactory organization of the systematic maintenance?（）
    A

    missing valve hand wheels

    B

    dirty tank tops

    C

    a large number of temporary repairs

    D

    All of the above


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    解析： 暂无解析

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    单选题
    Valve cages are used on some large diesel engines to （）
    A

    reduce wear on the valve stem

    B

    permit the use of alloy valve seat materials

    C

    reduce heat transfer from the valve seat

    D

    facilitate valve removal for servicing


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    解析： 暂无解析

  • 第23题：

    单选题
    The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that（）
    A

    one valve seats upwards, while the other seats downwards

    B

    the reed valves used on the discharge are made substantially thicker and heavier than the suction valves

    C

    the suction valve springs exert a greater tension than the discharge valve springs

    D

    the discharge valve springs exert a greater tension than the suction valve springs


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    解析： 暂无解析

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