A neutral equilibrium position for a vessel means that the metacenter is ______.A.lower than the keelB.at the same height as the center of gravityC.exactly at midshipsD.at the center of the waterplane area

题目

A neutral equilibrium position for a vessel means that the metacenter is ______.

A.lower than the keel

B.at the same height as the center of gravity

C.exactly at midships

D.at the center of the waterplane area

相似考题

1.during bunkering in the last vessel ,what were you assigned to do ?or what was your position during bunkering on your last vessel ?

2.With no environmental forces acting on the vessel，the center of gravity of an inclined vessel is vertically aligned with the ______．A.longitudinal centerlineB.center of flotationC.original vertical centerlineD.metacenter

3.A floating vessel will behave as if all of its weight is acting downward through the ______.A.center of gravityB.center of buoyancyC.center of floationD.Metacenter

4.A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?A.When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may resultB.When going directly from full ahead to full astern，there is complete steering controlC.When the vessel has headway and the propeller is in neutral，there is no effect on rudder controlD.When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM

参考答案和解析
正确答案：B
船舶的中性平衡状态是指船舶稳心与中心在相同高度。
更多“A neutral equilibrium position for a vessel means that the metacenter is ______.A.lower th ”相关问题

  • 第1题：

    An unstable upright equilibrium position on a vessel means that the metacenter is ______.

    A.lower than the center of gravity

    B.at the same height as the center of gravity

    C.higher than the baseline

    D.on the longitudinal centerline


    正确答案：A
    船舶不稳定的正浮平衡状态意味着稳心高度低于重心高度。

  • 第2题：

    For small angles of inclination, if the KG were equal to the KM, then the vessel would have __________.

    A.position stability

    B.negative stability

    C.neutral stability

    D.maximum stability


    正确答案：C
    对于小角度倾角，如果KG和KM相等，船舶成随遇平衡状态。

  • 第3题：

    In weather report, POSITION GOOD means that ______.

    A.the position is suitable

    B.the position is reliable

    C.the position is changeable

    D.the position is fixable


    正确答案：B
    在气象报告中，位置好意思是位置是可靠的。

  • 第4题：

    单选题
    A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）.
    A

    When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may result

    B

    When going directly from full ahead to full astern，there is complete steering control

    C

    When the vessel has headway and the propeller is in neutral，there is no effect on rudder control

    D

    When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    Stable equilibrium for a vessel means that the metacenter is（）.
    A

    at a lower level than the baseline

    B

    on the longitudinal centerline

    C

    higher than the center of gravity

    D

    at amidships


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
    A

    only when there is positive stability

    B

    only when there is negative stability

    C

    only when there is neutral stability

    D

    at all times


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    The original equilibrium position is stable when（）.
    A

    metacentric height is positive

    B

    metacentric radius is positive

    C

    KG exceed maximum allowable limits

    D

    Free surfaces are excessive


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    An unstable upright equilibrium position on a vessel means that the mrtacenter is（）.
    A

    lower than the center of gravity

    B

    at the same height as the center of gravity

    C

    heigher than the baseline

    D

    on the longitudinal centerline


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.
    A

    The objects lie in a straight line

    B

    The vessel is inside of a triangle formed by the objects

    C

    The vessel is outside of a triangle formed by the objects

    D

    A circle will pass through your position and the three objects


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    An unstable upright equilibrium position on a vessel means that the metacenter is（）.
    A

    lower than the center of gravity

    B

    at the same height as the center of gravity

    C

    higher than the baseline

    D

    on the longitudinal centerline


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
    A

    Running fix

    B

    Fix

    C

    Dead-reckoning position

    D

    Estimated position


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.
    A

    increase the righting moment

    B

    cause an increase in the righting arm

    C

    bring the vessel to an upright equilibrium position

    D

    cause the vessel to flop to a greater angle


    正确答案： C
    解析： 暂无解析

  • 第13题：

    For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force ______.

    A.only when there is positive stability

    B.only when there is negative stability

    C.only when there is neutral stability

    D.at all times


    正确答案：D
    对于漂浮的船舶，浮心和横稳心一直都在浮力的作用线上。

  • 第14题：

    In a weather report，POSITION GOOD means that the position is______．

    A.a good one

    B.reliable

    C.is easy to be fixed

    D.Obtainable


    正确答案：B
    在天气预报里飞机定位的位置是可靠的。

  • 第15题：


    What may be the author’s attitude toward the“Labor Market Equilibrium”？( )

    A.Positive
    B.Neutral
    C.Ambiguous
    D.Suspicious

    答案：B
    解析：
    态度题。根据题干定位到文中的第二部分，通过文中的词汇can be identified，has increased可以发现作者是很客观地在讲述劳动力市场均衡，因此B项“中立的”正确。其他三项，A项“积极的”、C项“模棱两可的”和D项“怀疑的”均不符合文章描述。故本题选B。参考译文：劳动力市场在经济学中，劳动是用来衡量人类所做工作的尺度。它通常与土地和资本等其他生产要素形成对比。它总是被当作一种商品——在市场上买卖的东西。公司为一个小时的劳动支付的工资单价被视为该劳动力的价格。当然，劳动力不同于其他商品。首先，其他商品的卖家只要卖到好价，不在乎谁买他们的产品。而劳动者非常关心谁购买他们的劳动力，因为该公司会成为他们的雇主。因此，劳动者关注工作条件、同事关系、通勤距离、晋升的可能性、声望、成就感等。劳动力的第二个显著特征是价格在市场中的特定含义：工资单价。人们一生中的主要收入来自他们的工作——来自出卖他们的劳动力——因此他们的工资水平将决定他们能在多大程度上养活自己和家人。因此，工资差异引发了经济中有关公平和公正的重要问题。劳动力市场既包括本地市场，又包括国家甚至国际市场，是由不同资质、技能和地理位置的较小的相互作用的劳动力市场组成的。它们依赖于雇主和求职者之间关于工资单价、就业条件、竞争水平和工作地点等信息的交流。劳动力市场均衡由于技术变革和资本积累，劳动力需求增加。许多人对这个事实感到惊讶。他们看到的是新技术正在毁灭工作岗位，而非创造就业机会。随着计算机和信息时代的到来，裁员成了20世纪90年代的流行语，并淘汰了数百万“好”工作，甚至是经理级别的岗位。那么，技术变革怎么可能创造就业机会并增加劳动力需求呢？技术变革在摧毁一些工作的同时也创造了其他工作机会。但它创造的工作机会要多于它所破坏的岗位。平均来说，新工作的工资比旧工作高。但是为了从技术进步中受益，人们必须掌握新的技能并更换工作。例如，在过去的15年里，对打字员的需求几乎降到了零，但是对能打字(用电脑而不是打字机)的人员和其他岗位的人员需求增加了。这些人比打字员创造的价值更高。因此，对具备打字技能的人的需求增加了。由于人口增长、技术变革和国内资本积累，劳动力供应增加了。家庭生产的机械化，如快餐准备服务(冰箱和微波炉)和洗衣服务(自动洗衣机、甩干机和晾衣架)，减少了全职太太做家务花费的时间，因此劳动力供给大幅增加。结果，劳动力供给稳步增长，但增速低于劳动力需求。技术进步和资本积累使劳动力需求增加，超过了人口增长，而且国内生产的技术变革增加了劳动力供应，因此，工资提升了，就业岗位增加。但并不是每个人都能享受高薪带来的繁荣。一些群体被抛在后面，一些人甚至目睹他们的工资单价下降。这是为什么？可以确定主要有以下原因。首先，技术变革以不同的方式影响不同群体的边际生产率。高技能计算机工人从信息革命中受益，而低技能工人则遭受损失。对高技能工人的需求增加了，对低技能工人的需求减少了。其次，国际竞争降低了对低技能工人的边际收入产品的需求，从而降低了对其劳动力的需求。

  • 第16题：

    单选题
    A neutral equilibrim position for a vessel means that the metacenter is（）.
    A

    lower than the keel

    B

    at the same height as the center of gravity

    C

    exactly at midships

    D

    at the center of the waterplane area


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    In a weather report, position good means that the position is（）.
    A

    a good one

    B

    reliable

    C

    is easy to be fixed

    D

    obtainable


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    Magnetic variation changes with a change in（）.
    A

    the vessel's heading

    B

    sea conditions

    C

    seasons

    D

    the vessel's position


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    A position obtained by applying ONLY your vessel’s course and speed to a known position is a （）.
    A

    fix

    B

    dead-reckoning position

    C

    running fix

    D

    probable position


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    When cargo is shifted from the main deck into the lower hold of a vessel，（）.
    A

    The metacenter will move downward

    B

    The GM will increase

    C

    The center of buoyancy will move upward

    D

    The list of the vessel will become great


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.
    A

    The metacenter does not remain in the same position for large angles of inclination

    B

    The center of gravity shifts due to inclination

    C

    The center of gravity shifts above the metacenter as the vessel is inclined

    D

    The mean draft will change as the vessel is inclined


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
    A

    only when there is positive stability

    B

    only when there is negative stability

    C

    only when there is neutral stability

    D

    at all times


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    A neutral equilibrium position for a vessel means that the metacenter is（）.
    A

    lower than the keel

    B

    at the same height as the center of gravity

    C

    exactly at midships

    D

    at the center of the waterplane area


    正确答案： B
    解析： 暂无解析

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