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The boom stops are installed on an offshore crane to ______.A.prevent the boom from being raised too highB.prevent the boom from swingingC.support the boom when not in useD.prevent the boom from being lowered

题目

The boom stops are installed on an offshore crane to ______.

A.prevent the boom from being raised too high

B.prevent the boom from swinging

C.support the boom when not in use

D.prevent the boom from being lowered

相似考题

1.On a crane, the boom indicator tells the operator what angle the boom angle is compared to the ______.A.vertical positionB.horizontal positionC.boom stop angleD.minimum radius angle

2.The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward．This is the signal to ______．A.raise the boomB.raise the hookC.raise the boom and hookD.check the boom stop

3.For any given pedestal crane，when the boom is lengthened，the lifting capacity is ______．A.unchangedB.increasedC.eliminatedD.decreased

4.The boom stops on a pedestal crane prevent the boom from ______.A.being raised too highB.swinging at seaC.overloading when not in useD.being lowered too low

更多“The boom stops are installed on an offshore crane to ______.A.prevent the boom from being ”相关问题

  • 第1题：

    The load chart of a ship crane enables the operator to combine the load radius with boom length to determine the ______．

    A.Maximum counter weight required

    B.Minimum horsepower required

    C.Hoist rope strength

    D.Allowable load


    正确答案：D

  • 第2题：

    What is meant by the term“luffing the boom”of a crane ________．

    A.Stopping the boom

    B.Topping or lowering the boom

    C.Moving the boom left or right

    D.All of the above


    正确答案：B

  • 第3题：

    单选题
    The （）(笨重货) must be handled by jumbo boom or shore crane.
    A

    awkward cargo

    B

    drummed cargo

    C

    cased cargo

    D

    heavy cargo


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    For any given pedestal crane,when the boom is lengthened, the lifing capacity is（）.
    A

    unchanged

    B

    increased

    C

    eliminated

    D

    decreased


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    On a ship’s crane，the load chart relates the allowable load to the combination of the boom length and（）.
    A

    winch speed

    B

    boom strength

    C

    load radius

    D

    cable strength


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    The boom stops on a pedestal crane prevent the boom from（）.
    A

    being raised too high

    B

    swinging at sea

    C

    overloading when not in use

    D

    being lowered too low


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    The boom stops are installed on an offshore crane to（）.
    A

    prevent the boom from being raised too high

    B

    prevent the boom from swinging

    C

    support the boom when not in use

    D

    prevent the boom from being lowered


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    The load chart of a crane enables the operator to combine the load radius with boom length to determine the（）.
    A

    maximum counter weight required

    B

    minimum horsepower required

    C

    hoist rope strength

    D

    allowable load


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Sudden starts or stops of the boom is likely to cause all of the following except（）.
    A

    breaking a cargo runner

    B

    parting guys topping lifts

    C

    carrying away a block

    D

    overheating the resistors and eventually burning out


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    When viewed from above，the best position for the guy in relation to the boom is（）.
    A

    At a 45° angle

    B

    At right angles

    C

    4 feet aft of the heel of the boom

    D

    Parallel to the boom


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    0n a crane ,the boom indicator tells the operator what angle the boom angle is compared to the（）.
    A

    vertical position

    B

    horizontal position

    C

    boom stop angle

    D

    minimum radius angle


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    On a ship crane，the load chart relates the allowable load to the combination of boom length and（）.
    A

    boom angle

    B

    boom strength

    C

    load radius

    D

    cable strength


    正确答案： C
    解析： 暂无解析

  • 第13题：

    What does “evel-luffing” accomplish during crane operations ________．

    A.It prevents the load from swinging when the boom level is adjusted

    B.Less power is needed when topping the boom with a load on the hook

    C.It maintains the height of the load above the deck

    D.All of the above


    正确答案：D

  • 第14题：

    When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to ______．

    A.winch speed

    B.boom strength

    C.load radius

    D.cable strength


    正确答案：C

  • 第15题：

    单选题
    Which action(s) is/are included in crane operations?（）
    A

    Normal boom stowage and shutdown operations

    B

    Emergency shutdown operation

    C

    Removing booms from stowage

    D

    All of the above


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
    A

    raise the boom

    B

    raise the hook

    C

    raise the boom and hook

    D

    check the boom stop


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    What is meant by the term TOPPING THE BOOM?（）
    A

    Lowering the boom

    B

    Raising the boom

    C

    Spotting the boom over the deck

    D

    Swinging the boom athwartships


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    What is meant by the term“luffing the boom”of a crane（）．
    A

    Stopping the boom

    B

    Topping or lowering the boom

    C

    Moving the boom left or right

    D

    All of the above


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.
    A

    winch speed

    B

    boom strength

    C

    load radius

    D

    cable strength


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    The boom indicator tells the operator at what angle the boom is compared to the（）.
    A

    horizontal position of the boom

    B

    vertical position of the boom

    C

    horizontal position of the load being lifted

    D

    vertical position of the load being lifted


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    The load chart of a ship crane enables the operator to combine the load radius with boom length to determine the（）.
    A

    maximum counter weight required

    B

    minimum horsepower required

    C

    hoist rope strength

    D

    allowable load


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    What does “evel-luffing” accomplish during crane operations（）.
    A

    It prevents the load from swinging when the boom level is adjusted

    B

    Less power is needed when topping the boom with a load on the hook

    C

    It maintains the height of the load above the deck

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    The boom indicator on a crane will indicate the（）.
    A

    length of the boom

    B

    angle of the boom

    C

    lifting capacity of the boom

    D

    direction of the boom


    正确答案： B
    解析： 暂无解析

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