Cross curves of stability show which of the following?（）.

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• Which of the following will increase the positive stability of your vessel?（）.

  A . Loading weight on deck B . Discharging weight from lower decks C . Shifting weight from upper to lower decks D . Shifting weight from lower to upper deck

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• 可贷资金的需求曲线（Demand curve of loanable funds）

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• GM cannot be used as an indicator of stability at all angles of inclination because（）.

  A . M is not fixed at large angles B . there is no M at large angles C . G is not fixed at large angles D . there is no G at large angle

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• Initial stability of a vessel may be improved by（）.

  A . removing loose water B . adding weight low in the vessel C . closing crossover valves between partly filled double bottom tanks D . All of the above

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• At all angles of inclination，the true measure of a vessel’s stability is the（）.

  A . metacentric height B . displacement C . righting moment D . inclining moment

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• At all angles of inclination, the ttrue measure of a vessel''s stability is the（）.

  A . metacentric height B . displacement C . righting moment D . inclining moment

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• Stability is determined principally by the location of the center of gravity and the（）.

  A . aft perpendicular B . center of buoyancy C . keel D . center of flotatio

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• 可贷资金的供给曲线（Supply curve of loanable funds）

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• Transverse stability calculations require the use of（）.

  A . hog or sag calculations or tables B . hydrostatic curves C . general arrangement plans D . cross-sectional views of the vessel

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• 需求的交叉弹性（Cross elasticity of demand）

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• A centrifugal impeller consists of a number of vanes curving （） from the direction of rotation.

  A . backwards B . forwards C . upward D . downward

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• To prevent loss of stability from free communication flooding you should（）.

  A . close the cross-connection valve between the off-center tanks B . completely flood high center tanks C . ballast double bottom wing tanks D . close any opening to the sea in an off-center tank

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• The effect of free surface on initial stability depends upon（）.

  A . the amount of liquid in the compartment B . the dimensions of the liquid surface and the vessel's displacement C . only the length of the compartment D . the vertical position of the liquid in the vessel

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• 轨迹视图中的Parameter Curve Out-of-Range Types用于（）。

  A . 用于设置匀速运动 B . 用于设置加速运动 C . 用于设置减速运动 D . 用于设置重复运动

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• Cross elasticity of demand 需求的交叉弹性

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• Stability is determined by the relationship of the center of gravity and the（）.

  A . water depth B . keel C . center of flotation D . center of buoyancy

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• The static stability curve for a given vessel peaks at 34°. For this ship，the danger angle for a permanent list would be about（）.

  A . 8.5° B . 17° C . 34° D . 51&deg

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• Cross curves of stability show which of the following（）.

  A . The righting arms at various angles of inclination and displacement B . The metacentric height at large angles of heel C . The height of the center of buoyancy at various angles D . The metacentric radius at various displacement

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• What is used as an indicator of initial stability? （）

  A . GM B . KG C . KM D . GZ

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• Which of the following does not affect the position of the DD curve?

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• What reason is given for the stability of the arch？

  A．A concrete foundation supports the arch. B．The arch is built with wedge-shaped blocks. C．The Romans made a strong type of concrete. D．The pressure flows up to the keystone.

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