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How should you signal the crane operator to lower the boom and raise the load ________．A.Extend arm and point finger in the direction to move the boomB.Extend arm with thumb pointing downward and flex fingers in and outC.With forearm vertical and forefing

题目

How should you signal the crane operator to lower the boom and raise the load ________．

A.Extend arm and point finger in the direction to move the boom

B.Extend arm with thumb pointing downward and flex fingers in and out

C.With forearm vertical and forefinger pointing up，move hand in small horizontal circles

D.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles

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.How should you signal the crane operator to hoist ________．A.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesB.With arm extended downwards and forefinger pointing down，move hand in small horizontal circlesC.Extend arm with fingers closed and thumb pointing upwardD.Place both fists in front of body with the thumbs pointing upward

3.How should you signal the crane operator to move slowly ________．A.Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signaB.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desiredC.First tap your elbow with one hand and then proceed to use regular signalsD.First tap the top of your head with your fist and then proceed to use regular signals

4.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

更多“How should you signal the crane operator to lower the boom and raise the load ________.A.E ”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：

    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3题：

    How should you signal the crane operator to raise the boom?_________.

    A.Extend arm with the thumb pointing up and flex the fingers in and out

    B.Place both fists in front of the body with the thumbs pointing upward

    C.With forearm vertical and forefinger pointing up，move hand in small horizontal circles

    D.Extend arm with fingers closed and point thumb upward


    正确答案：D
    你应怎样指挥起货机手提升吊杆？伸开臂膀手指握紧拇指向上

  • 第4题：

    单选题
    How should you signal the crane operator to raise the boom?（）.
    A

    Extend arm with the thumb pointing up and flex the fingers in and out

    B

    Place both fists in front of the body with the thumbs pointing upward

    C

    With forearm vertical and forefinger pointing up,move hand in small horizond circles

    D

    Extend arm with the fingers closed and thumb upward


    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
    How should you signal the crane operator to swing?（）.
    A

    With both arms extended out and palms to down, move arms back and forth

    B

    With arm ertended downwards and forefinger pointing down,move hand in small horizontal crecles

    C

    Extend arm and point finger in the direction to move boom

    D

    Place both fists in front of the body with the thumbs pointing outward


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    How should you signal the crane operator to stop in an emergency?（）
    A

    Extend arm with the palm down and hold this position rigidly

    B

    Place clasped hands in front of your body

    C

    Extend arm and move hand rapidly right and left with the palm down

    D

    Place both fists in front of the body with the thumbs pointing outward


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    How should you signal the crane operator to dog everthing?（）.
    A

    Place both fists in front of the body with the thumbs pointing outward each other

    B

    Clasp hands in front of your body

    C

    Extend arm with the palm down and and hold this position rigidly

    D

    Extend arm with the thumb pointing up, and flex the finger s in and out


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    How should you signal the crane operator to raise the boom and lower the load?（）.
    A

    Extend arm with the palm down and and hold this position rigidly

    B

    Place both fists in front of the body with the thumbs pointing outward each other

    C

    Clasp hands in front of you body

    D

    Extend arm with the thumb pointing up, and flex the finger s in and out for as long as the load movement is desired


    正确答案： A
    解析： 暂无解析

  • 第10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11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：

    How should you signal the crane operator to lower the boom?______.

    A.With arm extended and fingers closed, point thumb downward

    B.With arm extended downwards and forefinger pointing down, move hand in small horizontal circles

    C.Extend arm with the palm down, and hold this position rigidly

    D.With hands clasped in front of your body


    正确答案：A
    你应怎样指挥起货机手落放吊杆?伸开臂膀握紧拳头拇指向下

  • 第15题：

    How should you signal the crane operator to stop?______.

    A.Place both fists in front of your body with thumbs pointing pointing outward

    B.With both arms extended out and palms down, move arms back and forth

    C.Extend arm with the palm down and hold this position rigidly

    D.Clasp hands in front of your body


    正确答案：C
    你应怎样指挥起货机手停止？展开臂膀手掌向下并坚挺的地保持这个位置

  • 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
    How should you signal the crane operator to move slowly（）.
    A

    Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa

    B

    Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired

    C

    First tap your elbow with one hand and then proceed to use regular signals

    D

    First tap the top of your head with your fist and then proceed to use regular signals


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    How should you signal the crane operator to lower the boom and raise the load（）.
    A

    Extend arm and point finger in the direction to move the boom

    B

    Extend arm with thumb pointing downward and flex fingers in and out

    C

    With forearm vertical and forefinger pointing up，move hand in small horizontal circles

    D

    With arm extended downwards and forefinger pointing down，move hand in small horizontal circles


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    How should you signal the crane operator to stop?（）.
    A

    Place both fists in front of the body with the thumbs pointing outward

    B

    With both arms extended out and palms to down, move arms back and forth

    C

    Extend arm with the palm down and and hold this position rigidly

    D

    Clasp hands in front of you body


    正确答案： C
    解析： 暂无解析

  • 第20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21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22题：

    单选题
    In a general cargo crane, （） is fitted to raise or lower the jib.
    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

  • 第23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

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