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With a given load on the cargo hook，the thrust on a cargo boom ______.A.increases as the angle to the horizontal increasesB.increases as the angle to the horizontal decreasesC.is greatest at an angle of 45° and decreases as the boom is raised or loweredD.

题目

With a given load on the cargo hook，the thrust on a cargo boom ______.

A.increases as the angle to the horizontal increases

B.increases as the angle to the horizontal decreases

C.is greatest at an angle of 45° and decreases as the boom is raised or lowered

D.is least at an angle of 45° and increases as the boom is raised or lowered

相似考题

1.What cargo does a jumbo boom or heavy derrick used for lifting?

2.With a given load on the cargo hook，tension in a single span topping lift ______.A.increases as the boom's angle to the horizontal increasesB.is at a maximum when the boom is at a 45° angle to the horizontalC.increases as the boom's angle to the horizontal decreasesD.decreases as the boom's angle to the horizontal decreases

3.You are on a multiple-product tanker and scheduled to load a cargo classed as an aromatic amine．This cargo is incompatible with cargoes classed as ______．A.organic anhydridesB.ketonesC.phenolsD.esters

4.What equipment can be used to load cargo?

更多“With a given load on the cargo hook,the thrust on a cargo boom ______.A.increases as the a ”相关问题

  • 第1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2题：

    Mousing a cargo hook with marline or small line ______.

    A.increases the lifting capacity of the hook

    B.protects the hook from the sling ring

    C.prevents the sling ring from coming out of the hook

    D.All of the above


    正确答案：C
    吊货钩上的缠扎钩口是防止吊货环脱落吊钩。

  • 第3题：

    The jumbo boom can （）.

    • A、lift heavy cargo
    • B、load and unload
    • C、join ropes together
    • D、lift light cargo

    正确答案:A

  • 第4题：

    大副告诉装卸工人不要用钩子装袋装货。（）

    • A、The chief officer told the stevedores not to use hooks to load the deck cargo.
    • B、The bosun told the stevedores not to use hooks to load the bagged cargo.
    • C、The chief officer told the stevedores not to use hooks to load the bagged cargo.
    • D、The bosun told the stevedores not to use hooks to load the deck cargo.

    正确答案:C

  • 第5题：

    货钩（）

    • A、cargo chain
    • B、cargo tray
    • C、cargo hook
    • D、can hook

    正确答案:C

  • 第6题：

    单选题
    杂货船可以用自己的吊杆装卸货物。（）
    A

    General cargo ships may load and discharge by her own winch.

    B

    Bulk carriers may handle cargo by her own derricks.

    C

    General cargo ships may load and discharge by her own derricks.

    D

    General cargo ships may load and discharge by cranes.


    正确答案： C
    解析： 暂无解析

  • 第7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8题：

    单选题
    For a given weight of cargo，the stress on the heel block of a cargo boom（）.
    A

    increases as the cargo closes the head while hoisting

    B

    increases if the cargo runner is doubled up

    C

    decreases as the boom is topped to a greater angle

    D

    is determined by the thrust stresses on the boom


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    With a given load on the cargo hook，the thrust on a cargo boom（）.
    A

    increases as the angle to the horizontal increases

    B

    increases as the angle to the horizontal decreases

    C

    is greatest at an angle of 45° and decreases as the boom is raised or lowered

    D

    is least at an angle of 45° and increases as the boom is raised or lowered


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    With a given load on the cargo hook，tension in a single span topping lift（）.
    A

    increases as the boom's angle to the horizontal increases

    B

    is at a maximum when the boom is at a 45° angle to the horizontal

    C

    increases as the boom's angle to the horizontal decreases

    D

    decreases as the boom's angle to the horizontal decreases


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    The jumbo boom can （）.
    A

    lift heavy cargo

    B

    load and unload

    C

    join ropes together

    D

    lift light cargo


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The majority of cargo gear breakdowns are a result of（）.
    A

    Guy failures

    B

    Topping lift failures

    C

    Bending of the boom from compression

    D

    Gooseneck failure


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom ________．

    A.Cargo whip

    B.Gooseneck fitting

    C.Spider band

    D.Topping lift


    正确答案：D

  • 第14题：

    吊货索（）

    • A、cargo fall
    • B、cargo runner
    • C、cargo light
    • D、cargo hook

    正确答案:A

  • 第15题：

    A （）is used for lifting long heavy cargo.

    • A、derrick
    • B、crane
    • C、jumbo boom
    • D、boom

    正确答案:C

  • 第16题：

    cargo hook（）

    • A、吊货索
    • B、吊货网
    • C、吊桶钩
    • D、货钩

    正确答案:D

  • 第17题：

    单选题
    If the moisture content of the cargo sample is（）the Transportable Moisture Limit,then the cargo should be safe to load.
    A

    above

    B

    below

    C

    equal to

    D

    uncertain


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    The term "load on top" is used on many crude oil carriers, is to provide a method for （）.
    A

    calculating the ullage in the cargo tanks

    B

    loading ballast by gravity

    C

    the loading of new cargo into the slop tank as a procedure to minimize pollution

    D

    calculating the ratio of cargo expansion in a cargo tank


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    The tackle that raises and lowers the boom is（）.
    A

    the cargo fall

    B

    The cargo hoisting wire rope

    C

    the topping lift

    D

    the cargo whip


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    大副告诉装卸工人不要用钩子装袋装货。（）
    A

    The chief officer told the stevedores not to use hooks to load the deck cargo.

    B

    The bosun told the stevedores not to use hooks to load the bagged cargo.

    C

    The chief officer told the stevedores not to use hooks to load the bagged cargo.

    D

    The bosun told the stevedores not to use hooks to load the deck cargo.


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Mousing a cargo hook with marline or small line（）.
    A

    increases the lifting capacity of the hook

    B

    protects the hook from the sling ring

    C

    prevents the sling ring from coming out of the hook

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    A bench hook is used for（）.
    A

    handing of cargo cases

    B

    handing oilskings

    C

    sewing canvas

    D

    splicing small stuff


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    In a general cargo crane, （） is fitted to lift the cargo load.
    A

    the slewing motor

    B

    the luffing motor

    C

    the hoisting motor

    D

    none of the above


    正确答案： D
    解析： 暂无解析

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